Higher Level Taxon Index

This is an index of all the taxa, at generic or higher level, included on this site. Each is clickable, to lead to an appropriate place in the indices of the phyla. An example species within each taxon is also given. The WoRMS Logo logo links to the World Register of Marine Species page for the taxon.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Acanthochitona, Gray, 1821 - a genus, in the family Acanthochitonidae, in the order Chitonida, in the class Polyplacophora, of the phylum Mollusca. Example species Acanthochitona crinita, (Pennant, 1777).

Acanthochitonidae, Pilsbry, 1893 - a family, in the order Chitonida, in the class Polyplacophora, of the phylum Mollusca. Example species Acanthochitona crinita, (Pennant, 1777).

Acanthochitonina, Bergenhayn, 1930 - a suborder, in the order Chitonida, in the class Polyplacophora, of the phylum Mollusca. Example species Lepidochitona cinerea, (Linnaeus, 1767).

Acanthodoris, Gray, 1850 - a genus, in the family Onchidorididae, in the order Nudibranchia, in the class Gastropoda, of the phylum Mollusca. Example species Acanthodoris pilosa, (Abildgaard in Müller, 1789).

Achaeus, Leach, 1817 - a genus, in the family Inachidae, in the order Decapoda, in the class Malacostraca, of the phylum Arthropoda. Example species Achaeus cranchii, Leach, 1817.

Aciculata, Rouse & Fauchald, 1997 incertae sedis - a subclass, in the class Polychaeta, of the phylum Annelida. Example species Aphrodita aculeata, Linnaeus, 1758.

Acontiaria, Stephenson, 1935 - a superfamily, in the order Actiniaria, in the class Anthozoa, of the phylum Cnidaria. Example species Aiptasia mutabilis, (Gravenhorst, 1831).

Acotylea, Lang, 1884 - a suborder, in the order Polycladida, in the class Rhabditophora, of the phylum Platyhelminthes. Example species Leptoplana tremellaris, (Müller OF, 1773).

Actinia, Linnaeus, 1767 - a genus, in the family Actiniidae, in the order Actiniaria, in the class Anthozoa, of the phylum Cnidaria. Example species Actinia equina, (Linnaeus, 1758).

Actiniaria, - an order, in the class Anthozoa, of the phylum Cnidaria. Example species Actinia equina, (Linnaeus, 1758).

Actiniidae, Rafinesque, 1815 - a family, in the order Actiniaria, in the class Anthozoa, of the phylum Cnidaria. Example species Actinia equina, (Linnaeus, 1758).

Actinopterygii, - a class, of the phylum Chordata. Example species Lepadogaster lepadogaster, (Bonnaterre, 1788).

Actinothoe, Fischer, 1889 - a genus, in the family Sagartiidae, in the order Actiniaria, in the class Anthozoa, of the phylum Cnidaria. Example species Actinothoe sphyrodeta, (Gosse, 1858).

Aeolidida, - an infraorder, in the order Nudibranchia, in the class Gastropoda, of the phylum Mollusca. Example species Aeolidiella alderi, (Cocks, 1852).

Aeolidiella, Bergh, 1867 - a genus, in the family Aeolidiidae, in the order Nudibranchia, in the class Gastropoda, of the phylum Mollusca. Example species Aeolidiella alderi, (Cocks, 1852).

Aeolidiidae, Gray, 1827 - a family, in the order Nudibranchia, in the class Gastropoda, of the phylum Mollusca. Example species Aeolidiella alderi, (Cocks, 1852).

Aeolidioidea, Gray, 1827 - a superfamily, in the order Nudibranchia, in the class Gastropoda, of the phylum Mollusca. Example species Aeolidiella alderi, (Cocks, 1852).

Aglaophenia, Lamouroux, 1812 - a genus, in the family Aglaopheniidae, in the order Leptothecata, in the class Hydrozoa, of the phylum Cnidaria. Example species Aglaophenia pluma, (Linnaeus, 1767).

Aglaopheniidae, Marktanner-Turneretscher, 1890 - a family, in the order Leptothecata, in the class Hydrozoa, of the phylum Cnidaria. Example species Aglaophenia pluma, (Linnaeus, 1767).

Aiptasia, Gosse, 1858 - a genus, in the family Aiptasiidae, in the order Actiniaria, in the class Anthozoa, of the phylum Cnidaria. Example species Aiptasia mutabilis, (Gravenhorst, 1831).

Aiptasiidae, Carlgren, 1924 - a family, in the order Actiniaria, in the class Anthozoa, of the phylum Cnidaria. Example species Aiptasia mutabilis, (Gravenhorst, 1831).

Alcyonidiidae, Johnston, 1838 - a family, in the order Ctenostomatida, in the class Gymnolaemata, of the phylum Bryozoa. Example species Alcyonidium gelatinosum, (Linnaeus, 1761).

Alcyonidium, Lamouroux, 1813 - a genus, in the family Alcyonidiidae, in the order Ctenostomatida, in the class Gymnolaemata, of the phylum Bryozoa. Example species Alcyonidium gelatinosum, (Linnaeus, 1761).

Alvania, Risso, 1826 - a genus, in the family Rissoidae, in the order Littorinimorpha, in the class Gastropoda, of the phylum Mollusca. Example species Alvania beanii, (Hanley in Thorpe, 1844).

Amphipholis, Ljungman, 1866 - a genus, in the family Amphiuridae, in the order Ophiurida, in the class Ophiuroidea, of the phylum Echinodermata. Example species Amphipholis squamata, (Delle Chiaje, 1828).

Amphiuridae, Ljungman, 1867 - a family, in the order Ophiurida, in the class Ophiuroidea, of the phylum Echinodermata. Example species Amphipholis squamata, (Delle Chiaje, 1828).

Anaspidea, Fischer, 1883 - an order, in the class Gastropoda, of the phylum Mollusca. Example species Aplysia depilans, Gmelin, 1791.

Anemonia, Risso, 1826 - a genus, in the family Actiniidae, in the order Actiniaria, in the class Anthozoa, of the phylum Cnidaria. Example species Anemonia viridis, (Forskål, 1775).

Annelida, - a phylum.

Anomiidae, Rafinesque, 1815 - a family, in the order Pectinoida, in the class Bivalvia, of the phylum Mollusca. Example species Heteranomia squamula, (Linnaeus, 1758).

Anomioidea, Rafinesque, 1815 - a superfamily, in the order Pectinoida, in the class Bivalvia, of the phylum Mollusca. Example species Heteranomia squamula, (Linnaeus, 1758).

Anomura, MacLeay, 1838 - an infraorder, in the order Decapoda, in the class Malacostraca, of the phylum Arthropoda. Example species Galathea strigosa, (Linnaeus, 1761).

Anopla, Schultze, 1851 - a class, of the phylum Nemertea. Example species Lineus longissimus, (Gunnerus, 1770).

Ansates, G.B. Sowerby II [ex Klein], 1839 - a genus, in the family Patellidae, in the class Gastropoda, of the phylum Mollusca. Example species Ansates pellucida, (Linnaeus, 1758).

Antedonacea, Norman, 1865 - a superfamily, in the order Comatulida, in the class Crinoidea, of the phylum Echinodermata. Example species Antedon bifida, (Pennant, 1777).

Antedon, de Freminville, 1811 - a genus, in the family Antedonidae, in the order Comatulida, in the class Crinoidea, of the phylum Echinodermata. Example species Antedon bifida, (Pennant, 1777).

Antedonidae, Norman, 1865 - a family, in the order Comatulida, in the class Crinoidea, of the phylum Echinodermata. Example species Antedon bifida, (Pennant, 1777).

Anthoathecata, Cornelius, 1992 - an order, in the class Hydrozoa, of the phylum Cnidaria. Example species Clava multicornis, (Forsskål, 1775).

Anthozoa, - a class, of the phylum Cnidaria. Example species Actinia equina, (Linnaeus, 1758).

Aphrodita, Linnaeus, 1758 - a genus, in the family Aphroditidae, in the order Phyllodocida, in the class Polychaeta, of the phylum Annelida. Example species Aphrodita aculeata, Linnaeus, 1758.

Aphroditidae, Malmgren, 1867 - a family, in the order Phyllodocida, in the class Polychaeta, of the phylum Annelida. Example species Aphrodita aculeata, Linnaeus, 1758.

Aphroditiformia, - a suborder, in the order Phyllodocida, in the class Polychaeta, of the phylum Annelida. Example species Aphrodita aculeata, Linnaeus, 1758.

Aphroditoidea, - a superfamily, in the order Phyllodocida, in the class Polychaeta, of the phylum Annelida. Example species Aphrodita aculeata, Linnaeus, 1758.

Apletodon, Briggs, 1955 - a genus, in the family Gobiesocidae, in the order Gobiesociformes, in the class Actinopterygii, of the phylum Chordata. Example species Apletodon dentatus, (Facciolà, 1887).

Aplidium, Savigny, 1816 - a genus, in the family Polyclinidae, in the order Aplousobranchia, in the class Ascidiacea, of the phylum Chordata. Example species Aplidium turbinatum, (Savigny, 1816).

Aplousobranchia, Lahille, 1886 - an order, in the class Ascidiacea, of the phylum Chordata. Example species Clavelina lepadiformis, (Müller, 1776) .

Aplysia, Linnaeus, 1767 - a genus, in the family Aplysiidae, in the order Anaspidea, in the class Gastropoda, of the phylum Mollusca. Example species Aplysia depilans, Gmelin, 1791.

Aplysiidae, Lamarck, 1809 - a family, in the order Anaspidea, in the class Gastropoda, of the phylum Mollusca. Example species Aplysia depilans, Gmelin, 1791.

Aplysioidea, Lamarck, 1809 - a superfamily, in the order Anaspidea, in the class Gastropoda, of the phylum Mollusca. Example species Aplysia depilans, Gmelin, 1791.

Archaeobalanidae, Newman & Ross, 1976 - a family, in the order Sessilia, in the class Maxillopoda, of the phylum Arthropoda. Example species Semibalanus balanoides, (Linnaeus, 1758).

Arcoida, Stoliczka, 1871 - an order, in the class Bivalvia, of the phylum Mollusca. Example species Striarca lactea, (Linnaeus, 1758).

Arcoidea, Lamarck, 1809 - a superfamily, in the order Arcoida, in the class Bivalvia, of the phylum Mollusca. Example species Striarca lactea, (Linnaeus, 1758).

Ardeidae, - a family, in the order Ciconiiformes, in the class Aves, of the phylum Chordata. Example species Egretta garzetta, Linnaeus, 1758.

Arenaria, Brisson, 1760 - a genus, in the family Scolopacidae, in the order Charadriiformes, in the class Aves, of the phylum Chordata. Example species Arenaria interpres, (Linnaeus, 1758).

Arthropoda, - a phylum.

Articulata, Zittel, 1879 - a subclass, in the class Crinoidea, of the phylum Echinodermata. Example species Antedon bifida, (Pennant, 1777).

Ascidiacea, Nielsen, 1995 - a class, of the phylum Chordata. Example species Clavelina lepadiformis, (Müller, 1776) .

Ascidia, Linnaeus, 1767 - a genus, in the family Ascidiidae, in the order Phlebobranchia, in the class Ascidiacea, of the phylum Chordata. Example species Ascidia conchilega, Moeller, 1842.

Ascidiella, Roule, 1884 - a genus, in the family Ascidiidae, in the order Phlebobranchia, in the class Ascidiacea, of the phylum Chordata. Example species Ascidiella aspersa, (Müller, 1776).

Ascidiidae, Herdman, 1882 - a family, in the order Phlebobranchia, in the class Ascidiacea, of the phylum Chordata. Example species Ascidia conchilega, Moeller, 1842.

Ascophora, Levinsen, 1909 - an infraorder, in the order Cheilostomatida, in the class Gymnolaemata, of the phylum Bryozoa. Example species Schizoporella unicornis, (Johnston in Wood, 1844).

Astacidea, Latreille, 1802 - an infraorder, in the order Decapoda, in the class Malacostraca, of the phylum Arthropoda. Example species Homarus gammarus, (Linnaeus, 1758).

Asterias, Linnaeus, 1758 - a genus, in the family Asteriidae, in the order Forcipulatida, in the class Asteroidea, of the phylum Echinodermata. Example species Asterias rubens, Linnaeus, 1758.

Asteriidae, Gray, 1840 - a family, in the order Forcipulatida, in the class Asteroidea, of the phylum Echinodermata. Example species Marthasterias glacialis, (Linnaeus, 1758).

Asterina, Nardo, 1834 - a genus, in the family Asterinidae, in the order Valvatida, in the class Asteroidea, of the phylum Echinodermata. Example species Asterina gibbosa, (Pennant, 1777).

Asterinidae, Gray, 1840 - a family, in the order Valvatida, in the class Asteroidea, of the phylum Echinodermata. Example species Asterina gibbosa, (Pennant, 1777).

Asteroidea, de Blainville, 1830 - a class, of the phylum Echinodermata. Example species Marthasterias glacialis, (Linnaeus, 1758).

Asterozoa, - a subphylum, of the phylum Echinodermata. Example species Marthasterias glacialis, (Linnaeus, 1758).

Atelostomata, von Zittel, 1879 - a superorder, in the class Echinoidea, of the phylum Echinodermata. Example species Brissus unicolor, (Leske, 1778).

Aulactinia, Verrill, 1864 - a genus, in the family Actiniidae, in the order Actiniaria, in the class Anthozoa, of the phylum Cnidaria. Example species Aulactinia verrucosa, (Pennant, 1777).

Austrobalanidae, - a family, in the order Sessilia, in the class Maxillopoda, of the phylum Arthropoda. Example species Elminius modestus, Darwin, 1854.

Aves, - a class, of the phylum Chordata. Example species Charadrius hiaticula, Linnaeus, 1758.

Balanidae, Leach, 1806 - a family, in the order Sessilia, in the class Maxillopoda, of the phylum Arthropoda. Example species Balanus crenatus, Bruguiére, 1789.

Balaninae, - a subfamily, in the family Balanidae, in the order Sessilia, in the class Maxillopoda, of the phylum Arthropoda. Example species Balanus crenatus, Bruguiére, 1789.

Balanoidea, Leach, 1817 - a superfamily, in the order Sessilia, in the class Maxillopoda, of the phylum Arthropoda. Example species Semibalanus balanoides, (Linnaeus, 1758).

Balanomorpha, Pilsbry, 1916 - a suborder, in the order Sessilia, in the class Maxillopoda, of the phylum Arthropoda. Example species Chthamalus montagui, Southward, 1976.

Balanus, Costa, 1778 - a genus, in the family Balanidae, in the order Sessilia, in the class Maxillopoda, of the phylum Arthropoda. Example species Balanus crenatus, Bruguiére, 1789.

Barleeia, W. Clark, 1853 - a genus, in the family Barleeiidae, in the order Littorinimorpha, in the class Gastropoda, of the phylum Mollusca. Example species Barleeia unifasciata, (Montagu, 1803).

Barleeiidae, Gray, 1857 - a family, in the order Littorinimorpha, in the class Gastropoda, of the phylum Mollusca. Example species Barleeia unifasciata, (Montagu, 1803).

Batoidea, - an infraclass, in the class Elasmobranchii, of the phylum Chordata. Example species Raja clavata, Linnaeus, 1758.

Bela, Gray, 1847 - a genus, in the family Conidae, in the order Neogastropoda, in the class Gastropoda, of the phylum Mollusca. Example species Bela brachystoma, (Philippi, 1844).

Berthella, Blainville, 1824 - a genus, in the family Pleurobranchidae, in the order Pleurobranchomorpha, in the class Gastropoda, of the phylum Mollusca. Example species Berthella plumula, (Montagu, 1803).

Bittiinae, Cossmann, 1906 - a subfamily, in the family Cerithiidae, in the class Gastropoda, of the phylum Mollusca. Example species Bittium reticulatum, (da Costa, 1778).

Bittium, Gray, 1847 - a genus, in the family Cerithiidae, in the class Gastropoda, of the phylum Mollusca. Example species Bittium reticulatum, (da Costa, 1778).

Bivalvia, Linnaeus, 1758 - a class, of the phylum Mollusca. Example species Ennucula tenuis, (Montagu, 1808).

Blenniidae, - a family, in the order Perciformes, in the class Actinopterygii, of the phylum Chordata. Example species Lipophrys pholis, (Linnaeus, 1758).

Botrylloides, Milne-Edwards, 1841 - a genus, in the family Styelidae, in the order Stolidobranchia, in the class Ascidiacea, of the phylum Chordata. Example species Botrylloides leachii, (Savigny, 1816).

Botryllus, Gaertner, 1774 - a genus, in the family Styelidae, in the order Stolidobranchia, in the class Ascidiacea, of the phylum Chordata. Example species Botryllus schlosseri, (Pallas, 1766).

Brachyura, Linnaeus, 1758 - an infraorder, in the order Decapoda, in the class Malacostraca, of the phylum Arthropoda. Example species Cancer pagurus, Linnaeus, 1758.

Brissidae, Gray, 1855 - a family, in the order Spatangoida, in the class Echinoidea, of the phylum Echinodermata. Example species Brissus unicolor, (Leske, 1778).

Brissidina, Stockley et al., 2005 - a suborder, in the order Spatangoida, in the class Echinoidea, of the phylum Echinodermata. Example species Brissus unicolor, (Leske, 1778).

Brissus, Gray, 1825 - a genus, in the family Brissidae, in the order Spatangoida, in the class Echinoidea, of the phylum Echinodermata. Example species Brissus unicolor, (Leske, 1778).

Bryozoa, - a phylum.

Buccinoidea, - a superfamily, in the order Neogastropoda, in the class Gastropoda, of the phylum Mollusca. Example species Nassarius reticulatus, (Linnaeus, 1758).

Bugula, Oken, 1815 - a genus, in the family Bugulidae, in the order Cheilostomatida, in the class Gymnolaemata, of the phylum Bryozoa. Example species Bugula angustiloba, (Lamarck, 1816).

Bugulidae, Gray, 1848 - a family, in the order Cheilostomatida, in the class Gymnolaemata, of the phylum Bryozoa. Example species Bugula angustiloba, (Lamarck, 1816).

Buguloidea, Gray, 1848 - a superfamily, in the order Cheilostomatida, in the class Gymnolaemata, of the phylum Bryozoa. Example species Bugula angustiloba, (Lamarck, 1816).

Caenogastropoda, Cox, 1960 - a subclass, in the class Gastropoda, of the phylum Mollusca. Example species Bittium reticulatum, (da Costa, 1778).

Calcarea, Bowerbank, 1864 - a class, of the phylum Porifera. Example species Clathrina coriacea, (Montagu, 1818).

Calcaronea, Bidder, 1898 - a subclass, in the class Calcarea, of the phylum Porifera. Example species Grantia compressa, (Fabricius, 1780).

Calcinea, Bidder, 1898 - a subclass, in the class Calcarea, of the phylum Porifera. Example species Clathrina coriacea, (Montagu, 1818).

Calidris, Merrem, 1804 - a genus, in the family Scolopacidae, in the order Charadriiformes, in the class Aves, of the phylum Chordata. Example species Calidris alpina, (Linnaeus, 1758).

Calliactis, Verrill, 1869 - a genus, in the family Hormathiidae, in the order Actiniaria, in the class Anthozoa, of the phylum Cnidaria. Example species Calliactis parasitica, (Couch, 1838).

Callionymidae, - a family, in the order Perciformes, in the class Actinopterygii, of the phylum Chordata. Example species Callionymus lyra, Linnaeus, 1758.

Callionymus, Linnaeus, 1758 - a genus, in the family Callionymidae, in the order Perciformes, in the class Actinopterygii, of the phylum Chordata. Example species Callionymus lyra, Linnaeus, 1758.

Calliostoma, Swainson, 1840 - a genus, in the family Calliostomatidae, in the class Gastropoda, of the phylum Mollusca. Example species Calliostoma zizyphinum, (Linnaeus, 1758).

Calliostomatidae, Thiele, 1924 (1847) - a family, in the class Gastropoda, of the phylum Mollusca. Example species Calliostoma zizyphinum, (Linnaeus, 1758).

Calliostomatinae, Thiele, 1924 (1847) - a subfamily, in the family Calliostomatidae, in the class Gastropoda, of the phylum Mollusca. Example species Calliostoma zizyphinum, (Linnaeus, 1758).

Calyptraeidae, Lamarck, 1809 - a family, in the order Littorinimorpha, in the class Gastropoda, of the phylum Mollusca. Example species Crepidula fornicata, (Linnaeus, 1758).

Calyptraeoidea, Lamarck, 1809 - a superfamily, in the order Littorinimorpha, in the class Gastropoda, of the phylum Mollusca. Example species Crepidula fornicata, (Linnaeus, 1758).

Camarodonta, Jackson, 1912 - an order, in the class Echinoidea, of the phylum Echinodermata. Example species Paracentrotus lividus, (Lamarck, 1816).

Canalipalpata, Rouse & Fauchald, 1997 incertae sedis - a subclass, in the class Polychaeta, of the phylum Annelida. Example species Spirorbis corallinae, de Silva, Knight-Jones, 1962.

Cancer, Linnaeus, 1758 - a genus, in the family Cancridae, in the order Decapoda, in the class Malacostraca, of the phylum Arthropoda. Example species Cancer pagurus, Linnaeus, 1758.

Cancridae, Latreille, 1802 - a family, in the order Decapoda, in the class Malacostraca, of the phylum Arthropoda. Example species Cancer pagurus, Linnaeus, 1758.

Cancroidea, Latreille, 1802 - a superfamily, in the order Decapoda, in the class Malacostraca, of the phylum Arthropoda. Example species Cancer pagurus, Linnaeus, 1758.

Cantharidinae, Gray, 1857 - a subfamily, in the family Trochidae, in the class Gastropoda, of the phylum Mollusca. Example species Gibbula umbilicalis, (da Costa, 1778).

Capitata, Kühn, 1913 - a suborder, in the order Anthoathecata, in the class Hydrozoa, of the phylum Cnidaria. Example species Ectopleura larynx, (Ellis & Solander, 1786).

Capulidae, Fleming, 1822 - a family, in the order Littorinimorpha, in the class Gastropoda, of the phylum Mollusca. Example species Capulus ungaricus, (Linnaeus, 1758).

Capuloidea, Fleming, 1822 - a superfamily, in the order Littorinimorpha, in the class Gastropoda, of the phylum Mollusca. Example species Capulus ungaricus, (Linnaeus, 1758).

Capulus, Montfort, 1810 - a genus, in the family Capulidae, in the order Littorinimorpha, in the class Gastropoda, of the phylum Mollusca. Example species Capulus ungaricus, (Linnaeus, 1758).

Carcharhiniformes, - an order, in the class Elasmobranchii, of the phylum Chordata. Example species Scyliorhinus canicula, (Linnaeus, 1758).

Carcininae, MacLeay, 1838 - a subfamily, in the family Portunidae, in the order Decapoda, in the class Malacostraca, of the phylum Arthropoda. Example species Carcinus maenas, (Linnaeus, 1758).

Carcinus, Leach, 1814 - a genus, in the family Portunidae, in the order Decapoda, in the class Malacostraca, of the phylum Arthropoda. Example species Carcinus maenas, (Linnaeus, 1758).

Cardiidae, Lamarck, 1809 - a family, in the order Veneroida, in the class Bivalvia, of the phylum Mollusca. Example species Papillicardium papillosum, (Poli, 1791).

Cardioidea, Lamarck, 1809 - a superfamily, in the order Veneroida, in the class Bivalvia, of the phylum Mollusca. Example species Papillicardium papillosum, (Poli, 1791).

Caridea, Dana, 1852 - an infraorder, in the order Decapoda, in the class Malacostraca, of the phylum Arthropoda. Example species Pandalus montagui, Leach, 1814 in Leach, 1813-1814.

Carinacea, Kroh & Smith, 2010 - an infraclass, in the class Echinoidea, of the phylum Echinodermata. Example species Paracentrotus lividus, (Lamarck, 1816).

Caryophyllia, Lamarck, 1801 - a genus, in the family Caryophylliidae, in the order Scleractinia, in the class Anthozoa, of the phylum Cnidaria. Example species Caryophyllia smithii, Stokes & Broderip, 1828.

Caryophyllia, Lamarck, 1801 - a subgenus, in the family Caryophylliidae, in the order Scleractinia, in the class Anthozoa, of the phylum Cnidaria. Example species Caryophyllia smithii, Stokes & Broderip, 1828.

Caryophylliidae, Dana, 1846 - a family, in the order Scleractinia, in the class Anthozoa, of the phylum Cnidaria. Example species Caryophyllia smithii, Stokes & Broderip, 1828.

Catarrhini, - a section, in the order Primates, in the class Mammalia, of the phylum Chordata. Example species Homo sapiens, Linnaeus, 1758.

Cephalopoda, Cuvier, 1795 - a class, of the phylum Mollusca. Example species Sepiola atlantica, d'Orbigny, 1839.

Cerithiidae, Fleming, 1822 - a family, in the class Gastropoda, of the phylum Mollusca. Example species Bittium reticulatum, (da Costa, 1778).

Cerithioidea, Fleming, 1822 - a superfamily, in the class Gastropoda, of the phylum Mollusca. Example species Bittium reticulatum, (da Costa, 1778).

Charadriidae, - a family, in the order Charadriiformes, in the class Aves, of the phylum Chordata. Example species Charadrius hiaticula, Linnaeus, 1758.

Charadriiformes, - an order, in the class Aves, of the phylum Chordata. Example species Charadrius hiaticula, Linnaeus, 1758.

Charadrii, - a suborder, in the order Charadriiformes, in the class Aves, of the phylum Chordata. Example species Charadrius hiaticula, Linnaeus, 1758.

Charadrius, Linnaeus, 1758 - a genus, in the family Charadriidae, in the order Charadriiformes, in the class Aves, of the phylum Chordata. Example species Charadrius hiaticula, Linnaeus, 1758.

Cheilostomatida, Busk, 1852 - an order, in the class Gymnolaemata, of the phylum Bryozoa. Example species Schizoporella unicornis, (Johnston in Wood, 1844).

Chelicerata, - a subphylum, of the phylum Arthropoda. Example species Nymphon gracile, Leach, 1814.

Chelon, Artedi in Röse, 1793 - a genus, in the family Mugilidae, in the order Mugiliformes, in the class Actinopterygii, of the phylum Chordata. Example species Chelon labrosus, (Risso, 1827).

Chitonida, Thiele, 1909 - an order, in the class Polyplacophora, of the phylum Mollusca. Example species Lepidochitona cinerea, (Linnaeus, 1767).

Chlamydinae, von Teppner, 1922 - a subfamily, in the family Pectinidae, in the order Pectinoida, in the class Bivalvia, of the phylum Mollusca. Example species Mimachlamys varia, (Linnaeus, 1758).

Chlamydini, von Teppner, 1922 - a tribe, in the family Pectinidae, in the order Pectinoida, in the class Bivalvia, of the phylum Mollusca. Example species Talochlamys pusio, (Linnaeus, 1758).

Chordata, - a phylum.

Chroicocephalus, Eyton, 1836 - a genus, in the family Laridae, in the order Charadriiformes, in the class Aves, of the phylum Chordata. Example species Chroicocephalus ridibundus, (Linnaeus, 1766).

Chrysaora, Péron & Lesueur, 1810 - a genus, in the family Pelagiidae, in the order Semaeostomeae, in the class Scyphozoa, of the phylum Cnidaria. Example species Chrysaora hysoscella, (Linnaeus, 1767).

Chthamalidae, Darwin, 1854 - a family, in the order Sessilia, in the class Maxillopoda, of the phylum Arthropoda. Example species Chthamalus montagui, Southward, 1976.

Chthamalinae, - a subfamily, in the family Chthamalidae, in the order Sessilia, in the class Maxillopoda, of the phylum Arthropoda. Example species Chthamalus montagui, Southward, 1976.

Chthamaloidea, Darwin, 1854 - a superfamily, in the order Sessilia, in the class Maxillopoda, of the phylum Arthropoda. Example species Chthamalus montagui, Southward, 1976.

Chthamalus, Ranzani, 1817 - a genus, in the family Chthamalidae, in the order Sessilia, in the class Maxillopoda, of the phylum Arthropoda. Example species Chthamalus montagui, Southward, 1976.

Ciconiiformes, - an order, in the class Aves, of the phylum Chordata. Example species Egretta garzetta, Linnaeus, 1758.

Ciliata, Couch, 1832 - a genus, in the family Lotidae, in the order Gadiformes, in the class Actinopterygii, of the phylum Chordata. Example species Ciliata mustela, (Linnaeus, 1758).

Cingulopsidae, Fretter & Patil, 1958 - a family, in the order Littorinimorpha, in the class Gastropoda, of the phylum Mollusca. Example species Eatonina fulgida, (Adams J., 1797).

Cingulopsoidea, Fretter & Patil, 1958 - a superfamily, in the order Littorinimorpha, in the class Gastropoda, of the phylum Mollusca. Example species Eatonina fulgida, (Adams J., 1797).

Ciona, Fleming, 1822 - a genus, in the family Cionidae, in the order Phlebobranchia, in the class Ascidiacea, of the phylum Chordata. Example species Ciona intestinalis, (Linnaeus, 1767).

Cionidae, Lahille, 1887 - a family, in the order Phlebobranchia, in the class Ascidiacea, of the phylum Chordata. Example species Ciona intestinalis, (Linnaeus, 1767).

Cirripedia, Burmeister, 1834 - an infraclass, in the class Maxillopoda, of the phylum Arthropoda. Example species Dosima fascicularis, Ellis & Solander, 1786.

Clathrina, Gray, 1867 - a genus, in the family Clathrinidae, in the order Clathrinida, in the class Calcarea, of the phylum Porifera. Example species Clathrina coriacea, (Montagu, 1818).

Clathrinidae, Minchin, 1900 - a family, in the order Clathrinida, in the class Calcarea, of the phylum Porifera. Example species Clathrina coriacea, (Montagu, 1818).

Clathrinida, Hartman, 1958 - an order, in the class Calcarea, of the phylum Porifera. Example species Clathrina coriacea, (Montagu, 1818).

Clava, Gmelin, 1788 - a genus, in the family Hydractiniidae, in the order Anthoathecata, in the class Hydrozoa, of the phylum Cnidaria. Example species Clava multicornis, (Forsskål, 1775).

Clavelina, Savigny, 1816 - a genus, in the family Clavelinidae, in the order Aplousobranchia, in the class Ascidiacea, of the phylum Chordata. Example species Clavelina lepadiformis, (Müller, 1776) .

Clavelinidae, - a family, in the order Aplousobranchia, in the class Ascidiacea, of the phylum Chordata. Example species Clavelina lepadiformis, (Müller, 1776) .

Clypeasteroida, L. Agassiz, 1835 - an order, in the class Echinoidea, of the phylum Echinodermata. Example species Echinocyamus pusillus, (O.F. Müller, 1776).

Cnidaria, - a phylum.

Coelosphaeridae, Dendy, 1922 - a family, in the order Poecilosclerida, in the class Demospongiae, of the phylum Porifera. Example species Lissodendoryx grisea, (Hansen, 1885).

Coleoidea, Bather, 1888 - a subclass, in the class Cephalopoda, of the phylum Mollusca. Example species Sepiola atlantica, d'Orbigny, 1839.

Collembola, - an order, in the class Insecta, of the phylum Arthropoda. Example species Lipura maritima, (Guérin-Méneville, 1836).

Comatulida, - an order, in the class Crinoidea, of the phylum Echinodermata. Example species Antedon bifida, (Pennant, 1777).

Comatulidina, AH Clark, 1908 - a suborder, in the order Comatulida, in the class Crinoidea, of the phylum Echinodermata. Example species Antedon bifida, (Pennant, 1777).

Conica, Broch, 1910 - a suborder, in the order Leptothecata, in the class Hydrozoa, of the phylum Cnidaria. Example species Aglaophenia pluma, (Linnaeus, 1767).

Conidae, Fleming, 1822 - a family, in the order Neogastropoda, in the class Gastropoda, of the phylum Mollusca. Example species Bela brachystoma, (Philippi, 1844).

Conoidea, - a superfamily, in the order Neogastropoda, in the class Gastropoda, of the phylum Mollusca. Example species Bela brachystoma, (Philippi, 1844).

Corallimorpharia, - an order, in the class Anthozoa, of the phylum Cnidaria. Example species Corynactis viridis, Allman, 1846.

Corallimorphidae, Hertwig, 1882 - a family, in the order Corallimorpharia, in the class Anthozoa, of the phylum Cnidaria. Example species Corynactis viridis, Allman, 1846.

Corynactis, Allman, 1846 - a genus, in the family Corallimorphidae, in the order Corallimorpharia, in the class Anthozoa, of the phylum Cnidaria. Example species Corynactis viridis, Allman, 1846.

Corystes, Bosc, 1802 - a genus, in the family Corystidae, in the order Decapoda, in the class Malacostraca, of the phylum Arthropoda. Example species Corystes cassivelaunus, (Pennant, 1777).

Corystidae, Samouelle, 1819 - a family, in the order Decapoda, in the class Malacostraca, of the phylum Arthropoda. Example species Corystes cassivelaunus, (Pennant, 1777).

Corystoidea, Samouelle, 1819 - a superfamily, in the order Decapoda, in the class Malacostraca, of the phylum Arthropoda. Example species Corystes cassivelaunus, (Pennant, 1777).

Cottidae, - a family, in the order Scorpaeniformes, in the class Actinopterygii, of the phylum Chordata. Example species Myoxocephalus scorpius, (Linnaeus, 1758).

Crepidula, Lamarck, 1799 - a genus, in the family Calyptraeidae, in the order Littorinimorpha, in the class Gastropoda, of the phylum Mollusca. Example species Crepidula fornicata, (Linnaeus, 1758).

Crinoidea, - a class, of the phylum Echinodermata. Example species Antedon bifida, (Pennant, 1777).

Crinozoa, - a subphylum, of the phylum Echinodermata. Example species Antedon bifida, (Pennant, 1777).

Crustacea, - a subphylum, of the phylum Arthropoda. Example species Leptocythere pellucida, (Baird, 1850).

Cryptoplacoidea, H. & A. Adams, 1858 - a superfamily, in the order Chitonida, in the class Polyplacophora, of the phylum Mollusca. Example species Acanthochitona crinita, (Pennant, 1777).

Ctenostomatida, Busk, 1852 - an order, in the class Gymnolaemata, of the phylum Bryozoa. Example species Alcyonidium gelatinosum, (Linnaeus, 1761).

Cytharella, Monterosato, 1875 - a genus, in the family Conidae, in the order Neogastropoda, in the class Gastropoda, of the phylum Mollusca. Example species Cytharella coarctata, (Forbes, 1840).

Cytherocopina, Baird, 1850 - a suborder, in the order Podocopida, in the class Ostracoda, of the phylum Arthropoda. Example species Leptocythere pellucida, (Baird, 1850).

Cytheroidea, Baird, 1850 - a superfamily, in the order Podocopida, in the class Ostracoda, of the phylum Arthropoda. Example species Leptocythere pellucida, (Baird, 1850).

Decapoda, Latreille, 1803 - an order, in the class Malacostraca, of the phylum Arthropoda. Example species Galathea strigosa, (Linnaeus, 1761).

Decapodiformes, Young, Vecchione & Donovan, 1998 - an infraclass, in the class Cephalopoda, of the phylum Mollusca. Example species Sepiola atlantica, d'Orbigny, 1839.

Demospongiae, Sollas, 1885 - a class, of the phylum Porifera. Example species Suberites domuncula, (Olivi, 1792) .

Dendrodoa, MacLeay, 1824 - a genus, in the family Styelidae, in the order Stolidobranchia, in the class Ascidiacea, of the phylum Chordata. Example species Dendrodoa grossularia, (Van Beneden, 1846).

Dexiarchia, - a suborder, in the order Nudibranchia, in the class Gastropoda, of the phylum Mollusca. Example species Doto coronata, (Gmelin, 1791).

Diapsidia, - a subclass, in the class Reptilia, of the phylum Chordata. Example species Lacerta vivipara, Von Jacquin, 1787.

Didemnidae, Giard, 1872 - a family, in the order Aplousobranchia, in the class Ascidiacea, of the phylum Chordata. Example species Didemnum candidum, Savigny, 1813.

Didemnum, Savigny, 1816 - a genus, in the family Didemnidae, in the order Aplousobranchia, in the class Ascidiacea, of the phylum Chordata. Example species Didemnum candidum, Savigny, 1813.

Diodora, J. E. Gray, 1821 - a genus, in the family Fissurellidae, in the class Gastropoda, of the phylum Mollusca. Example species Diodora graeca, (Linnaeus, 1758).

Discodorididae, Bergh, 1891 - a family, in the order Nudibranchia, in the class Gastropoda, of the phylum Mollusca. Example species Jorunna tomentosa, (Cuvier, 1804).

Discomedusae, - a subclass, in the class Scyphozoa, of the phylum Cnidaria. Example species Chrysaora hysoscella, (Linnaeus, 1767).

Distomus, Gaertner, 1774 - a genus, in the family Styelidae, in the order Stolidobranchia, in the class Ascidiacea, of the phylum Chordata. Example species Distomus variolosus, Gaertner, 1774.

Doridacea, Thiele, 1931 - an infraorder, in the order Nudibranchia, in the class Gastropoda, of the phylum Mollusca. Example species Doris pseudoargus, Rapp, 1827.

Dorididae, Rafinesque, 1815 - a family, in the order Nudibranchia, in the class Gastropoda, of the phylum Mollusca. Example species Doris pseudoargus, Rapp, 1827.

Doridoidea, Rafinesque, 1815 - a superfamily, in the order Nudibranchia, in the class Gastropoda, of the phylum Mollusca. Example species Doris pseudoargus, Rapp, 1827.

Doris, Linnaeus, 1758 - a genus, in the family Dorididae, in the order Nudibranchia, in the class Gastropoda, of the phylum Mollusca. Example species Doris pseudoargus, Rapp, 1827.

Dosima, Gray, 1825 - a genus, in the family Lepadidae, in the order Lepadiformes, in the class Maxillopoda, of the phylum Arthropoda. Example species Dosima fascicularis, Ellis & Solander, 1786.

Dotidae, Gray, 1853 - a family, in the order Nudibranchia, in the class Gastropoda, of the phylum Mollusca. Example species Doto coronata, (Gmelin, 1791).

Doto, Oken, 1815 - a genus, in the family Dotidae, in the order Nudibranchia, in the class Gastropoda, of the phylum Mollusca. Example species Doto coronata, (Gmelin, 1791).

Dynamena, Lamouroux, 1812 - a genus, in the family Sertulariidae, in the order Leptothecata, in the class Hydrozoa, of the phylum Cnidaria. Example species Dynamena pumila, (Linnaeus, 1758).

Dynamene, Leach, 1814 - a genus, in the family Sphaeromatidae, in the order Isopoda, in the class Malacostraca, of the phylum Arthropoda. Example species Dynamene bidentata, (Adams, 1800).

Eatonina, Thiele, 1912 - a genus, in the family Cingulopsidae, in the order Littorinimorpha, in the class Gastropoda, of the phylum Mollusca. Example species Eatonina fulgida, (Adams J., 1797).

Echiichthys, Bleeker, 1861 - a genus, in the family Trachinidae, in the order Perciformes, in the class Actinopterygii, of the phylum Chordata. Example species Echiichthys vipera, (Cuvier, 1829).

Echinacea, Claus, 1876 - a superorder, in the class Echinoidea, of the phylum Echinodermata. Example species Paracentrotus lividus, (Lamarck, 1816).

Echinidea, Kroh & Smith, 2010 - an infraorder, in the order Camarodonta, in the class Echinoidea, of the phylum Echinodermata. Example species Paracentrotus lividus, (Lamarck, 1816).

Echinocyamidae, Lambert & Thiéry, 1914 - a family, in the order Clypeasteroida, in the class Echinoidea, of the phylum Echinodermata. Example species Echinocyamus pusillus, (O.F. Müller, 1776).

Echinocyamus, van Phelsum, 1774 - a genus, in the family Echinocyamidae, in the order Clypeasteroida, in the class Echinoidea, of the phylum Echinodermata. Example species Echinocyamus pusillus, (O.F. Müller, 1776).

Echinodermata, - a phylum.

Echinoidea, Leske, 1778 - a class, of the phylum Echinodermata. Example species Echinocyamus pusillus, (O.F. Müller, 1776).

Echinozoa, - a subphylum, of the phylum Echinodermata. Example species Echinocyamus pusillus, (O.F. Müller, 1776).

Ectopleura, L. Agassiz, 1862 - a genus, in the family Tubulariidae, in the order Anthoathecata, in the class Hydrozoa, of the phylum Cnidaria. Example species Ectopleura larynx, (Ellis & Solander, 1786).

Egretta, Brisson, 1760 - a genus, in the family Ardeidae, in the order Ciconiiformes, in the class Aves, of the phylum Chordata. Example species Egretta garzetta, Linnaeus, 1758.

Elasmobranchii, - a class, of the phylum Chordata. Example species Scyliorhinus canicula, (Linnaeus, 1758).

Electra, Lamouroux, 1816 - a genus, in the family Electridae, in the order Cheilostomatida, in the class Gymnolaemata, of the phylum Bryozoa. Example species Electra pilosa, (Linnaeus, 1767).

Electridae, d'Orbigny, 1851 - a family, in the order Cheilostomatida, in the class Gymnolaemata, of the phylum Bryozoa. Example species Electra pilosa, (Linnaeus, 1767).

Eledone, Leach, 1817 - a genus, in the family Octopodidae, in the order Octopoda, in the class Cephalopoda, of the phylum Mollusca. Example species Eledone cirrhosa, (Lamarck, 1798).

Eleutherocarpida, James-Clark, 1863 - a suborder, in the order Stauromedusae, in the class Staurozoa, of the phylum Cnidaria. Example species Haliclystus auricula, (Rathke, 1806).

Elminiinae, - a subfamily, in the family Austrobalanidae, in the order Sessilia, in the class Maxillopoda, of the phylum Arthropoda. Example species Elminius modestus, Darwin, 1854.

Elminius, Leach, 1825 - a genus, in the family Austrobalanidae, in the order Sessilia, in the class Maxillopoda, of the phylum Arthropoda. Example species Elminius modestus, Darwin, 1854.

Elysia, Risso, 1818 - a genus, in the family Plakobranchidae, in the order Sacoglossa, in the class Gastropoda, of the phylum Mollusca. Example species Elysia viridis, (Montagu, 1804).

Emarginula, Lamarck, 1801 - a genus, in the family Fissurellidae, in the class Gastropoda, of the phylum Mollusca. Example species Emarginula fissura, (Linnaeus, 1758).

Endomyaria, Stephenson, 1921 - a superfamily, in the order Actiniaria, in the class Anthozoa, of the phylum Cnidaria. Example species Actinia equina, (Linnaeus, 1758).

Ennucula, Iredale, 1931 - a genus, in the family Nuculidae, in the order Nuculida, in the class Bivalvia, of the phylum Mollusca. Example species Ennucula tenuis, (Montagu, 1808).

Epialtidae, MacLeay, 1838 - a family, in the order Decapoda, in the class Malacostraca, of the phylum Arthropoda. Example species Pisa tetraodon, (Pennant, 1777).

Epitoniidae, Berry, 1910 (1812) - a family, in the class Gastropoda, of the phylum Mollusca. Example species Epitonium clathrus, (Linnaeus, 1758).

Epitonioidea, Berry, 1910 (1812) - a superfamily, in the class Gastropoda, of the phylum Mollusca. Example species Epitonium clathrus, (Linnaeus, 1758).

Epitonium, Röding, 1798 - a genus, in the family Epitoniidae, in the class Gastropoda, of the phylum Mollusca. Example species Epitonium clathrus, (Linnaeus, 1758).

Erato, Risso, 1826 - a genus, in the family Triviidae, in the order Littorinimorpha, in the class Gastropoda, of the phylum Mollusca. Example species Erato voluta, (Montagu, 1803).

Eratoinae, Gill, 1871 - a subfamily, in the family Triviidae, in the order Littorinimorpha, in the class Gastropoda, of the phylum Mollusca. Example species Erato voluta, (Montagu, 1803).

Eteoninae, Bergstroem, 1914 - a subfamily, in the family Phyllodocidae, in the order Phyllodocida, in the class Polychaeta, of the phylum Annelida. Example species Eulalia viridis, (Linnaeus, 1767).

Euarchontoglires, - a superorder, in the class Mammalia, of the phylum Chordata. Example species Homo sapiens, Linnaeus, 1758.

Eubrachyura, de Saint Laurent, 1980 - a section, in the order Decapoda, in the class Malacostraca, of the phylum Arthropoda. Example species Cancer pagurus, Linnaeus, 1758.

Eucarida, Calman, 1904 - a superorder, in the class Malacostraca, of the phylum Arthropoda. Example species Galathea strigosa, (Linnaeus, 1761).

Euctenidiacea, Tardy, 1970 - a suborder, in the order Nudibranchia, in the class Gastropoda, of the phylum Mollusca. Example species Doris pseudoargus, Rapp, 1827.

Euechinoidea, Bronn, 1860 - a subclass, in the class Echinoidea, of the phylum Echinodermata. Example species Echinocyamus pusillus, (O.F. Müller, 1776).

Euheterodonta, - an infraclass, in the class Bivalvia, of the phylum Mollusca. Example species Papillicardium papillosum, (Poli, 1791).

Eulalia, Savigny, 1818 - a genus, in the family Phyllodocidae, in the order Phyllodocida, in the class Polychaeta, of the phylum Annelida. Example species Eulalia viridis, (Linnaeus, 1767).

Eulimidae, Philippi, 1853 - a family, in the class Gastropoda, of the phylum Mollusca. Example species Melanella alba, (da Costa, 1778).

Eulimoidea, Philippi, 1853 - a superfamily, in the class Gastropoda, of the phylum Mollusca. Example species Melanella alba, (da Costa, 1778).

Eumalacostraca, - a subclass, in the class Malacostraca, of the phylum Arthropoda. Example species Galathea strigosa, (Linnaeus, 1761).

Eupantopodida, Fry, 1978 - a suborder, in the order Pantopoda, in the class Pycnogonida, of the phylum Arthropoda. Example species Nymphon gracile, Leach, 1814.

Euspira, Agassiz, 1838 - a genus, in the family Naticidae, in the order Littorinimorpha, in the class Gastropoda, of the phylum Mollusca. Example species Euspira pulchella, (Risso, 1826).

Eutheria, - an infraclass, in the class Mammalia, of the phylum Chordata. Example species Homo sapiens, Linnaeus, 1758.

Filifera, Kühn, 1913 - a suborder, in the order Anthoathecata, in the class Hydrozoa, of the phylum Cnidaria. Example species Clava multicornis, (Forsskål, 1775).

Fissurellidae, Fleming, 1822 - a family, in the class Gastropoda, of the phylum Mollusca. Example species Diodora graeca, (Linnaeus, 1758).

Fissurelloidea, Fleming, 1822 - a superfamily, in the class Gastropoda, of the phylum Mollusca. Example species Diodora graeca, (Linnaeus, 1758).

Flustrina, Smitt, 1868 - an infraorder, in the order Cheilostomatida, in the class Gymnolaemata, of the phylum Bryozoa. Example species Bugula angustiloba, (Lamarck, 1816).

Forcipulatida, Perrier, 1884 - an order, in the class Asteroidea, of the phylum Echinodermata. Example species Marthasterias glacialis, (Linnaeus, 1758).

Fraginae, Stewart, 1930 - a subfamily, in the family Cardiidae, in the order Veneroida, in the class Bivalvia, of the phylum Mollusca. Example species Papillicardium papillosum, (Poli, 1791).

Gadidae, Rafinesque, 1810 - a family, in the order Gadiformes, in the class Actinopterygii, of the phylum Chordata. Example species Trisopterus luscus, (Linnaeus, 1758).

Gadiformes, - an order, in the class Actinopterygii, of the phylum Chordata. Example species Gaidropsarus mediterraneus, (Linnaeus, 1758).

Gaidropsarus, Rafinesque, 1810 - a genus, in the family Lotidae, in the order Gadiformes, in the class Actinopterygii, of the phylum Chordata. Example species Gaidropsarus mediterraneus, (Linnaeus, 1758).

Galathea, Fabricius, 1793 - a genus, in the family Galatheidae, in the order Decapoda, in the class Malacostraca, of the phylum Arthropoda. Example species Galathea strigosa, (Linnaeus, 1761).

Galatheidae, Samoelle, 1819 - a family, in the order Decapoda, in the class Malacostraca, of the phylum Arthropoda. Example species Galathea strigosa, (Linnaeus, 1761).

Galatheoidea, Samouelle, 1819 - a superfamily, in the order Decapoda, in the class Malacostraca, of the phylum Arthropoda. Example species Galathea strigosa, (Linnaeus, 1761).

Galeommatoidea, J. E. Gray, 1840 - a superfamily, in the order Veneroida, in the class Bivalvia, of the phylum Mollusca. Example species Lasaea adansoni, Gmelin, 1791.

Galeomorphi, - a superorder, in the class Elasmobranchii, of the phylum Chordata. Example species Scyliorhinus canicula, (Linnaeus, 1758).

Gari, Schumacher, 1817 - a genus, in the family Psammobiidae, in the order Veneroida, in the class Bivalvia, of the phylum Mollusca. Example species Gari tellinella, (Lamarck, 1818).

Gasterosteidae, - a family, in the order Gasterosteiformes, in the class Actinopterygii, of the phylum Chordata. Example species Spinachia spinachia, (Linnaeus, 1758).

Gasterosteiformes, - an order, in the class Actinopterygii, of the phylum Chordata. Example species Spinachia spinachia, (Linnaeus, 1758).

Gastropoda, Cuvier, 1795 - a class, of the phylum Mollusca. Example species Patella ulyssiponensis, Linnaeus, 1758.

Gibbula, Risso, 1826 - a genus, in the family Trochidae, in the class Gastropoda, of the phylum Mollusca. Example species Gibbula umbilicalis, (da Costa, 1778).

Gnathophiurina, Matsumoto, 1915 - an infraorder, in the order Ophiurida, in the class Ophiuroidea, of the phylum Echinodermata. Example species Amphipholis squamata, (Delle Chiaje, 1828).

Gnathostomata, - a superclass1, of the phylum Chordata. Example species Scyliorhinus canicula, (Linnaeus, 1758).

Gobiesocidae, - a family, in the order Gobiesociformes, in the class Actinopterygii, of the phylum Chordata. Example species Lepadogaster lepadogaster, (Bonnaterre, 1788).

Gobiesociformes, - an order, in the class Actinopterygii, of the phylum Chordata. Example species Lepadogaster lepadogaster, (Bonnaterre, 1788).

Gobiidae, - a family, in the order Perciformes, in the class Actinopterygii, of the phylum Chordata. Example species Gobius paganellus, Linnaeus, 1758.

Gobiusculus, Duncker, 1928 - a genus, in the family Gobiidae, in the order Perciformes, in the class Actinopterygii, of the phylum Chordata. Example species Gobiusculus flavescens, (Fabricius, 1779).

Gobius, Linnaeus, 1758 - a genus, in the family Gobiidae, in the order Perciformes, in the class Actinopterygii, of the phylum Chordata. Example species Gobius paganellus, Linnaeus, 1758.

Grantia, Fleming, 1828 - a genus, in the family Grantiidae, in the order Leucosolenida, in the class Calcarea, of the phylum Porifera. Example species Grantia compressa, (Fabricius, 1780).

Grantiidae, Dendy, 1893 - a family, in the order Leucosolenida, in the class Calcarea, of the phylum Porifera. Example species Grantia compressa, (Fabricius, 1780).

Gymnolaemata, Allman, 1856 - a class, of the phylum Bryozoa. Example species Schizoporella unicornis, (Johnston in Wood, 1844).

Hadromerida, Topsent, 1894 - an order, in the class Demospongiae, of the phylum Porifera. Example species Suberites domuncula, (Olivi, 1792) .

Haematopus, Linnaeus, 1758 - a genus, in the family Charadriidae, in the order Charadriiformes, in the class Aves, of the phylum Chordata. Example species Haematopus ostralegus, Linnaeus, 1758.

Halichondria, Fleming, 1828 - a genus, in the family Halichondriidae, in the order Halichondrida, in the class Demospongiae, of the phylum Porifera. Example species Halichondria panicea, (Pallas, 1766).

Halichondria, Fleming, 1828 - a subgenus, in the family Halichondriidae, in the order Halichondrida, in the class Demospongiae, of the phylum Porifera. Example species Halichondria panicea, (Pallas, 1766).

Halichondrida, Gray, 1867 - an order, in the class Demospongiae, of the phylum Porifera. Example species Halichondria panicea, (Pallas, 1766).

Halichondriidae, Gray, 1867 - a family, in the order Halichondrida, in the class Demospongiae, of the phylum Porifera. Example species Halichondria panicea, (Pallas, 1766).

Haliclystus, James-Clark, 1863 - a genus, in the family Lucernariidae, in the order Stauromedusae, in the class Staurozoa, of the phylum Cnidaria. Example species Haliclystus auricula, (Rathke, 1806).

Haliotidae, Rafinesque, 1815 - a family, in the class Gastropoda, of the phylum Mollusca. Example species Haliotis tuberculata, Linnaeus, 1758.

Haliotis, Linnaeus, 1758 - a genus, in the family Haliotidae, in the class Gastropoda, of the phylum Mollusca. Example species Haliotis tuberculata, Linnaeus, 1758.

Haliotoidea, Rafinesque, 1815 - a superfamily, in the class Gastropoda, of the phylum Mollusca. Example species Haliotis tuberculata, Linnaeus, 1758.

Haplorrhini, - a suborder, in the order Primates, in the class Mammalia, of the phylum Chordata. Example species Homo sapiens, Linnaeus, 1758.

Harmothoe, Kinberg, 1856 - a genus, in the family Polynoidae, in the order Phyllodocida, in the class Polychaeta, of the phylum Annelida. Example species Harmothoe extenuata, (Grube, 1840).

Heteranomia, Winckworth, 1922 - a genus, in the family Anomiidae, in the order Pectinoida, in the class Bivalvia, of the phylum Mollusca. Example species Heteranomia squamula, (Linnaeus, 1758).

Heterobranchia, - a subclass, in the class Gastropoda, of the phylum Mollusca. Example species Rissoella opalina, (Jeffreys, 1848).

Heterodonta, Neumayr, 1884 - a subclass, in the class Bivalvia, of the phylum Mollusca. Example species Papillicardium papillosum, (Poli, 1791).

Heteronemertea, - a subclass, in the class Anopla, of the phylum Nemertea. Example species Lineus longissimus, (Gunnerus, 1770).

Heterotremata, Guinot, 1977 - a subsection, in the order Decapoda, in the class Malacostraca, of the phylum Arthropoda. Example species Cancer pagurus, Linnaeus, 1758.

Hexacorallia, - a subclass, in the class Anthozoa, of the phylum Cnidaria. Example species Actinia equina, (Linnaeus, 1758).

Hexapoda, - a subphylum, of the phylum Arthropoda. Example species Lipura maritima, (Guérin-Méneville, 1836).

Hirundinidae, - a family, in the order Passeriformes, in the class Aves, of the phylum Chordata. Example species Hirundo rustica, Linnaeus, 1758.

Hirundo, - a genus, in the family Hirundinidae, in the order Passeriformes, in the class Aves, of the phylum Chordata. Example species Hirundo rustica, Linnaeus, 1758.

Homarus, Weber, 1795 - a genus, in the family Nephropidae, in the order Decapoda, in the class Malacostraca, of the phylum Arthropoda. Example species Homarus gammarus, (Linnaeus, 1758).

Hominidae, Pilsbry, 1895 - a family, in the order Primates, in the class Mammalia, of the phylum Chordata. Example species Homo sapiens, Linnaeus, 1758.

Homininae, Pilsbry, 1895 - a subfamily, in the family Hominidae, in the order Primates, in the class Mammalia, of the phylum Chordata. Example species Homo sapiens, Linnaeus, 1758.

Hominini, Pilsbry, 1895 - a tribe, in the family Hominidae, in the order Primates, in the class Mammalia, of the phylum Chordata. Example species Homo sapiens, Linnaeus, 1758.

Hominoidea, - a superfamily, in the order Primates, in the class Mammalia, of the phylum Chordata. Example species Homo sapiens, Linnaeus, 1758.

Homo, - a genus, in the family Hominidae, in the order Primates, in the class Mammalia, of the phylum Chordata. Example species Homo sapiens, Linnaeus, 1758.

Homoscleromorpha, Bergquist, 1978 - a class, of the phylum Porifera. Example species Oscarella lobularis, (Schmidt, 1862).

Homosclerophorida, Dendy, 1905 - an order, in the class Homoscleromorpha, of the phylum Porifera. Example species Oscarella lobularis, (Schmidt, 1862).

Hormathiidae, Carlgren, 1932 - a family, in the order Actiniaria, in the class Anthozoa, of the phylum Cnidaria. Example species Calliactis parasitica, (Couch, 1838).

Hydractinia, van Beneden, 1841 - a genus, in the family Hydractiniidae, in the order Anthoathecata, in the class Hydrozoa, of the phylum Cnidaria. Example species Hydractinia echinata, (Fleming, 1828).

Hydractiniidae, L. Aggasiz, 1862 - a family, in the order Anthoathecata, in the class Hydrozoa, of the phylum Cnidaria. Example species Clava multicornis, (Forsskål, 1775).

Hydroidolina, Collins & Marques, 2004 - a subclass, in the class Hydrozoa, of the phylum Cnidaria. Example species Clava multicornis, (Forsskål, 1775).

Hydrozoa, Owen, 1843 - a class, of the phylum Cnidaria. Example species Clava multicornis, (Forsskål, 1775).

Hymeniacidon, Bowerbank, 1858 - a genus, in the family Halichondriidae, in the order Halichondrida, in the class Demospongiae, of the phylum Porifera. Example species Hymeniacidon perlevis, (Montagu, 1818).

Idotea, Fabricius, 1798 - a genus, in the family Idoteidae, in the order Isopoda, in the class Malacostraca, of the phylum Arthropoda. Example species Idotea granulosa, Rathke, 1843.

Idoteidae, Samouelle, 1819 - a family, in the order Isopoda, in the class Malacostraca, of the phylum Arthropoda. Example species Idotea granulosa, Rathke, 1843.

Inachidae, MacLeay, 1838 - a family, in the order Decapoda, in the class Malacostraca, of the phylum Arthropoda. Example species Achaeus cranchii, Leach, 1817.

Inachus, Weber, 1795 - a genus, in the family Inachidae, in the order Decapoda, in the class Malacostraca, of the phylum Arthropoda. Example species Inachus phalangium, (Fabricius, 1775).

Incirrata, - a suborder, in the order Octopoda, in the class Cephalopoda, of the phylum Mollusca. Example species Eledone cirrhosa, (Lamarck, 1798).

Insecta, - a class, of the phylum Arthropoda. Example species Lipura maritima, (Guérin-Méneville, 1836).

Irregularia, Latreille, 1825 - an infraclass, in the class Echinoidea, of the phylum Echinodermata. Example species Echinocyamus pusillus, (O.F. Müller, 1776).

Isopoda, Latreille, 1817 - an order, in the class Malacostraca, of the phylum Arthropoda. Example species Ligia oceanica, (Linnaeus, 1767).

Jorunna, Bergh, 1876 - a genus, in the family Discodorididae, in the order Nudibranchia, in the class Gastropoda, of the phylum Mollusca. Example species Jorunna tomentosa, (Cuvier, 1804).

Jujubinus, Monterosato, 1884 - a genus, in the family Trochidae, in the class Gastropoda, of the phylum Mollusca. Example species Jujubinus striatus, (Linnaeus, 1758).

Labridae, - a family, in the order Perciformes, in the class Actinopterygii, of the phylum Chordata. Example species Labrus bergylta, Ascanius, 1767.

Labrus, Linnaeus, 1758 - a genus, in the family Labridae, in the order Perciformes, in the class Actinopterygii, of the phylum Chordata. Example species Labrus bergylta, Ascanius, 1767.

Lacerta, - a genus, in the family Lacertidae, in the order Squamata, in the class Reptilia, of the phylum Chordata. Example species Lacerta vivipara, Von Jacquin, 1787.

Lacertidae, - a family, in the order Squamata, in the class Reptilia, of the phylum Chordata. Example species Lacerta vivipara, Von Jacquin, 1787.

Lacertinae, - a subfamily, in the family Lacertidae, in the order Squamata, in the class Reptilia, of the phylum Chordata. Example species Lacerta vivipara, Von Jacquin, 1787.

Lacuna, Turton, 1827 - a genus, in the family Littorinidae, in the order Littorinimorpha, in the class Gastropoda, of the phylum Mollusca. Example species Lacuna crassior, (Montagu, 1803).

Laganiformes, Desor, 1847 - an infraorder, in the order Clypeasteroida, in the class Echinoidea, of the phylum Echinodermata. Example species Echinocyamus pusillus, (O.F. Müller, 1776).

Lamellaria, Montagu, 1815 - a genus, in the family Velutinidae, in the order Littorinimorpha, in the class Gastropoda, of the phylum Mollusca. Example species Lamellaria latens, (Müller O.F., 1776).

Laridae, - a family, in the order Charadriiformes, in the class Aves, of the phylum Chordata. Example species Chroicocephalus ridibundus, (Linnaeus, 1766).

Lari, - a suborder, in the order Charadriiformes, in the class Aves, of the phylum Chordata. Example species Chroicocephalus ridibundus, (Linnaeus, 1766).

Larus, Linnaeus, 1758 - a genus, in the family Laridae, in the order Charadriiformes, in the class Aves, of the phylum Chordata. Example species Larus argentatus, Pontoppidan, 1763.

Lasaea, Brown, 1827 - a genus, in the family Lasaeidae, in the order Veneroida, in the class Bivalvia, of the phylum Mollusca. Example species Lasaea adansoni, Gmelin, 1791.

Lasaeidae, Gray, 1842 - a family, in the order Veneroida, in the class Bivalvia, of the phylum Mollusca. Example species Lasaea adansoni, Gmelin, 1791.

Lepadidae, - a family, in the order Lepadiformes, in the class Maxillopoda, of the phylum Arthropoda. Example species Dosima fascicularis, Ellis & Solander, 1786.

Lepadiformes, Buckeridge & Newman, 2006 - an order, in the class Maxillopoda, of the phylum Arthropoda. Example species Dosima fascicularis, Ellis & Solander, 1786.

Lepadogaster, Goüan, 1770 - a genus, in the family Gobiesocidae, in the order Gobiesociformes, in the class Actinopterygii, of the phylum Chordata. Example species Lepadogaster lepadogaster, (Bonnaterre, 1788).

Lepadomorpha, Pilsbry, 1916 - a suborder, in the order Lepadiformes, in the class Maxillopoda, of the phylum Arthropoda. Example species Dosima fascicularis, Ellis & Solander, 1786.

Lepas, Linnaeus, 1758 - a genus, in the family Lepadidae, in the order Lepadiformes, in the class Maxillopoda, of the phylum Arthropoda. Example species Lepas anatifera, Linnaeus, 1758.

Lepidochitona, Gray, 1821 - a genus, in the family Lepidochitonidae, in the order Chitonida, in the class Polyplacophora, of the phylum Mollusca. Example species Lepidochitona cinerea, (Linnaeus, 1767).

Lepidochitonidae, Iredale, 1914 - a family, in the order Chitonida, in the class Polyplacophora, of the phylum Mollusca. Example species Lepidochitona cinerea, (Linnaeus, 1767).

Lepidochitoninae, - a subfamily, in the family Lepidochitonidae, in the order Chitonida, in the class Polyplacophora, of the phylum Mollusca. Example species Lepidochitona cinerea, (Linnaeus, 1767).

Lepidonotinae, Willey, 1902 - a subfamily, in the family Polynoidae, in the order Phyllodocida, in the class Polychaeta, of the phylum Annelida. Example species Lepidonotus squamatus, (Linnaeus, 1758).

Lepidonotus, Leach, 1816 - a genus, in the family Polynoidae, in the order Phyllodocida, in the class Polychaeta, of the phylum Annelida. Example species Lepidonotus squamatus, (Linnaeus, 1758).

Lepidosauria, - a superorder, in the class Reptilia, of the phylum Chordata. Example species Lacerta vivipara, Von Jacquin, 1787.

Lepidosuaromorpha, - an infraclass, in the class Reptilia, of the phylum Chordata. Example species Lacerta vivipara, Von Jacquin, 1787.

Lepralielloidea, Vigneaux, 1949 - a superfamily, in the order Cheilostomatida, in the class Gymnolaemata, of the phylum Bryozoa. Example species Oshurkovia littoralis, (Hastings, 1944).

Lepraliomorpha, Gordon, 1989 - a section, in the order Cheilostomatida, in the class Gymnolaemata, of the phylum Bryozoa. Example species Schizoporella unicornis, (Johnston in Wood, 1844).

Leptocythere, Müller, 1927 - a genus, in the family Leptocytheridae, in the order Podocopida, in the class Ostracoda, of the phylum Arthropoda. Example species Leptocythere pellucida, (Baird, 1850).

Leptocytheridae, Hanai, 1957 - a family, in the order Podocopida, in the class Ostracoda, of the phylum Arthropoda. Example species Leptocythere pellucida, (Baird, 1850).

Leptoplana, Ehrenberg, 1831, sensu Lang, 1884 - a genus, in the family Leptoplanidae, in the order Polycladida, in the class Rhabditophora, of the phylum Platyhelminthes. Example species Leptoplana tremellaris, (Müller OF, 1773).

Leptoplanidae, Stimpson, 1857 - a family, in the order Polycladida, in the class Rhabditophora, of the phylum Platyhelminthes. Example species Leptoplana tremellaris, (Müller OF, 1773).

Leptoplanoidea, Faubel, 1984 - a superfamily, in the order Polycladida, in the class Rhabditophora, of the phylum Platyhelminthes. Example species Leptoplana tremellaris, (Müller OF, 1773).

Leptothecata, Cornelius, 1992 - an order, in the class Hydrozoa, of the phylum Cnidaria. Example species Aglaophenia pluma, (Linnaeus, 1767).

Leucosolenida, Hartman, 1958 - an order, in the class Calcarea, of the phylum Porifera. Example species Grantia compressa, (Fabricius, 1780).

Ligia, Fabricius, 1798 - a genus, in the family Ligiidae, in the order Isopoda, in the class Malacostraca, of the phylum Arthropoda. Example species Ligia oceanica, (Linnaeus, 1767).

Ligiidae, Leach, 1814 - a family, in the order Isopoda, in the class Malacostraca, of the phylum Arthropoda. Example species Ligia oceanica, (Linnaeus, 1767).

Limacia, O.F. Müller, 1781 - a genus, in the family Polyceridae, in the order Nudibranchia, in the class Gastropoda, of the phylum Mollusca. Example species Limacia clavigera, (O.F. Müller, 1776).

Limapontiidae, Gray, 1847 - a family, in the order Sacoglossa, in the class Gastropoda, of the phylum Mollusca. Example species Placida dendritica, (Alder & Hancock, 1843).

Limapontioidea, Gray, 1847 - a superfamily, in the order Sacoglossa, in the class Gastropoda, of the phylum Mollusca. Example species Placida dendritica, (Alder & Hancock, 1843).

Lineidae, - a family, in the class Anopla, of the phylum Nemertea. Example species Lineus longissimus, (Gunnerus, 1770).

Lineus, Sowerby, 1806 - a genus, in the family Lineidae, in the class Anopla, of the phylum Nemertea. Example species Lineus longissimus, (Gunnerus, 1770).

Lipophrys, Gill, 1896 - a genus, in the family Blenniidae, in the order Perciformes, in the class Actinopterygii, of the phylum Chordata. Example species Lipophrys pholis, (Linnaeus, 1758).

Lipura, - a genus, in the family Neanuridae, in the order Collembola, in the class Insecta, of the phylum Arthropoda. Example species Lipura maritima, (Guérin-Méneville, 1836).

Lissodendoryx, Topsent, 1892 - a genus, in the family Coelosphaeridae, in the order Poecilosclerida, in the class Demospongiae, of the phylum Porifera. Example species Lissodendoryx grisea, (Hansen, 1885).

Lissodendoryx, Topsent, 1892 - a subgenus, in the family Coelosphaeridae, in the order Poecilosclerida, in the class Demospongiae, of the phylum Porifera. Example species Lissodendoryx grisea, (Hansen, 1885).

Littorina, Férussac, 1822 - a genus, in the family Littorinidae, in the order Littorinimorpha, in the class Gastropoda, of the phylum Mollusca. Example species Littorina obtusata, (Linnaeus, 1758).

Littorinidae, Children, 1834 - a family, in the order Littorinimorpha, in the class Gastropoda, of the phylum Mollusca. Example species Lacuna crassior, (Montagu, 1803).

Littorinimorpha, Golikov & Starobogatov, 1975 - an order, in the class Gastropoda, of the phylum Mollusca. Example species Capulus ungaricus, (Linnaeus, 1758).

Littorinoidea, Children, 1834 - a superfamily, in the order Littorinimorpha, in the class Gastropoda, of the phylum Mollusca. Example species Lacuna crassior, (Montagu, 1803).

Lophozozymus, A. Milne-Edwards, 1863 - a genus, in the family Xanthidae, in the order Decapoda, in the class Malacostraca, of the phylum Arthropoda. Example species Lophozozymus incisus, (H. Milne Edwards, 1834).

Lotidae, - a family, in the order Gadiformes, in the class Actinopterygii, of the phylum Chordata. Example species Gaidropsarus mediterraneus, (Linnaeus, 1758).

Lottiidae, Gray, 1840 - a family, in the class Gastropoda, of the phylum Mollusca. Example species Tectura virginea, (O.F. Müller, 1776).

Lottioidea, Gray, 1840 - a superfamily, in the class Gastropoda, of the phylum Mollusca. Example species Tectura virginea, (O.F. Müller, 1776).

Lucernariidae, Johnston, 1847 - a family, in the order Stauromedusae, in the class Staurozoa, of the phylum Cnidaria. Example species Haliclystus auricula, (Rathke, 1806).

Macrura Reptantia, Bouvier, 1917 - a suborder, in the order Decapoda, in the class Malacostraca, of the phylum Arthropoda. Example species Homarus gammarus, (Linnaeus, 1758).

Maja, Lamarck, 1801 - a genus, in the family Majidae, in the order Decapoda, in the class Malacostraca, of the phylum Arthropoda. Example species Maja squinado, (Herbst, 1788).

Majidae, Samouelle, 1819 - a family, in the order Decapoda, in the class Malacostraca, of the phylum Arthropoda. Example species Maja squinado, (Herbst, 1788).

Majinae, Samouelle, 1819 - a subfamily, in the family Majidae, in the order Decapoda, in the class Malacostraca, of the phylum Arthropoda. Example species Maja squinado, (Herbst, 1788).

Majoidea, Samoulle, 1819 - a superfamily, in the order Decapoda, in the class Malacostraca, of the phylum Arthropoda. Example species Maja squinado, (Herbst, 1788).

Malacostegina, Levinsen, 1909 - a suborder, in the order Cheilostomatida, in the class Gymnolaemata, of the phylum Bryozoa. Example species Electra pilosa, (Linnaeus, 1767).

Malacostraca, - a class, of the phylum Arthropoda. Example species Galathea strigosa, (Linnaeus, 1761).

Malmgreniella, Hartman, 1967 - a genus, in the family Polynoidae, in the order Phyllodocida, in the class Polychaeta, of the phylum Annelida. Example species Malmgreniella lunulata, (Delle Chiaje, 1830).

Mammalia, Linnaeus, 1758 - a class, of the phylum Chordata. Example species Homo sapiens, Linnaeus, 1758.

Mangeliinae, P. Fischer, 1883 - a subfamily, in the family Conidae, in the order Neogastropoda, in the class Gastropoda, of the phylum Mollusca. Example species Bela brachystoma, (Philippi, 1844).

Manzonia, Brusina, 1870 - a genus, in the family Rissoidae, in the order Littorinimorpha, in the class Gastropoda, of the phylum Mollusca. Example species Manzonia crassa, (Kanmacher, 1798).

Marthasterias, Jullien, 1878 - a genus, in the family Asteriidae, in the order Forcipulatida, in the class Asteroidea, of the phylum Echinodermata. Example species Marthasterias glacialis, (Linnaeus, 1758).

Maxillopoda, Dahl, 1956 - a class, of the phylum Arthropoda. Example species Dosima fascicularis, Ellis & Solander, 1786.

Melanella, Bowdich, 1822 - a genus, in the family Eulimidae, in the class Gastropoda, of the phylum Mollusca. Example species Melanella alba, (da Costa, 1778).

Melarhaphe, Menke, 1828 - a genus, in the family Littorinidae, in the order Littorinimorpha, in the class Gastropoda, of the phylum Mollusca. Example species Melarhaphe neritoides, (Linnaeus, 1758).

Membraniporoidea, Busk, 1854 - a superfamily, in the order Cheilostomatida, in the class Gymnolaemata, of the phylum Bryozoa. Example species Electra pilosa, (Linnaeus, 1767).

Microcionidae, Carter, 1875 - a family, in the order Poecilosclerida, in the class Demospongiae, of the phylum Porifera. Example species Ophlitaspongia papilla, Bowerbank, 1866.

Microcionina, Hajdu, van Soest & Hooper, 1994 - a suborder, in the order Poecilosclerida, in the class Demospongiae, of the phylum Porifera. Example species Ophlitaspongia papilla, Bowerbank, 1866.

Mimachlamydini, Waller, 1993 - a tribe, in the family Pectinidae, in the order Pectinoida, in the class Bivalvia, of the phylum Mollusca. Example species Mimachlamys varia, (Linnaeus, 1758).

Mimachlamys, Iredale, 1929 - a genus, in the family Pectinidae, in the order Pectinoida, in the class Bivalvia, of the phylum Mollusca. Example species Mimachlamys varia, (Linnaeus, 1758).

Modiolarca, Gray, 1847 - a genus, in the family Mytilidae, in the order Mytiloida, in the class Bivalvia, of the phylum Mollusca. Example species Modiolarca subpicta, (Cantraine, 1835).

Modiolus, Lamarck, 1799 - a genus, in the family Mytilidae, in the order Mytiloida, in the class Bivalvia, of the phylum Mollusca. Example species Modiolus modiolus, (Linnaeus, 1758).

Mollusca, - a phylum.

Mopalioidea, Dall, 1889 - a superfamily, in the order Chitonida, in the class Polyplacophora, of the phylum Mollusca. Example species Lepidochitona cinerea, (Linnaeus, 1767).

Morchellium, Giard, 1872 - a genus, in the family Polyclinidae, in the order Aplousobranchia, in the class Ascidiacea, of the phylum Chordata. Example species Morchellium argus, (Milne-Edwards, 1841).

Mugilidae, - a family, in the order Mugiliformes, in the class Actinopterygii, of the phylum Chordata. Example species Chelon labrosus, (Risso, 1827).

Mugiliformes, - an order, in the class Actinopterygii, of the phylum Chordata. Example species Chelon labrosus, (Risso, 1827).

Muricidae, Rafinesque, 1815 - a family, in the order Neogastropoda, in the class Gastropoda, of the phylum Mollusca. Example species Nucella lapillus, (Linnaeus, 1758).

Muricoidea, Rafinesque, 1815 - a superfamily, in the order Neogastropoda, in the class Gastropoda, of the phylum Mollusca. Example species Nucella lapillus, (Linnaeus, 1758).

Musculus, Röding, 1798 - a genus, in the family Mytilidae, in the order Mytiloida, in the class Bivalvia, of the phylum Mollusca. Example species Musculus costulatus, (Risso, 1826).

Myoxocephalus, Tilesius (ex Steller), 1811 - a genus, in the family Cottidae, in the order Scorpaeniformes, in the class Actinopterygii, of the phylum Chordata. Example species Myoxocephalus scorpius, (Linnaeus, 1758).

Mytilidae, Rafinesque, 1815 - a family, in the order Mytiloida, in the class Bivalvia, of the phylum Mollusca. Example species Modiolarca subpicta, (Cantraine, 1835).

Mytiloida, Ferussac, 1822 - an order, in the class Bivalvia, of the phylum Mollusca. Example species Modiolarca subpicta, (Cantraine, 1835).

Mytilus, Linnaeus, 1758 - a genus, in the family Mytilidae, in the order Mytiloida, in the class Bivalvia, of the phylum Mollusca. Example species Mytilus edulis, Linnaeus, 1758.

Myxillina, Hajdu, Van Soest & Hooper, 1994 - a suborder, in the order Poecilosclerida, in the class Demospongiae, of the phylum Porifera. Example species Lissodendoryx grisea, (Hansen, 1885).

Nassariidae, Iredale, 1916 (1835) - a family, in the order Neogastropoda, in the class Gastropoda, of the phylum Mollusca. Example species Nassarius reticulatus, (Linnaeus, 1758).

Nassarius, Duméril, 1805 - a genus, in the family Nassariidae, in the order Neogastropoda, in the class Gastropoda, of the phylum Mollusca. Example species Nassarius reticulatus, (Linnaeus, 1758).

Naticidae, Guilding, 1834 - a family, in the order Littorinimorpha, in the class Gastropoda, of the phylum Mollusca. Example species Euspira pulchella, (Risso, 1826).

Naticoidea, Guilding, 1834 - a superfamily, in the order Littorinimorpha, in the class Gastropoda, of the phylum Mollusca. Example species Euspira pulchella, (Risso, 1826).

Neanuridae, - a family, in the order Collembola, in the class Insecta, of the phylum Arthropoda. Example species Lipura maritima, (Guérin-Méneville, 1836).

Necora, Holthuis, 1987 - a genus, in the family Polybiidae, in the order Decapoda, in the class Malacostraca, of the phylum Arthropoda. Example species Necora puber, (Linnaeus, 1767).

Nemertea, - a phylum.

Neoaves, - a superorder, in the class Aves, of the phylum Chordata. Example species Charadrius hiaticula, Linnaeus, 1758.

Neocheilostomatina, d’Hondt, 1985 - a suborder, in the order Cheilostomatida, in the class Gymnolaemata, of the phylum Bryozoa. Example species Schizoporella unicornis, (Johnston in Wood, 1844).

Neogastropoda, Wenz, 1938 - an order, in the class Gastropoda, of the phylum Mollusca. Example species Nassarius reticulatus, (Linnaeus, 1758).

Neognathae, - an infraclass, in the class Aves, of the phylum Chordata. Example species Charadrius hiaticula, Linnaeus, 1758.

Neognathostomata, Smith, 1981 - a superorder, in the class Echinoidea, of the phylum Echinodermata. Example species Echinocyamus pusillus, (O.F. Müller, 1776).

Neoloricata, Bergenhayn, 1955 - a subclass, in the class Polyplacophora, of the phylum Mollusca. Example species Lepidochitona cinerea, (Linnaeus, 1767).

Neornithes, - a subclass, in the class Aves, of the phylum Chordata. Example species Charadrius hiaticula, Linnaeus, 1758.

Neoselachii, - a subclass, in the class Elasmobranchii, of the phylum Chordata. Example species Scyliorhinus canicula, (Linnaeus, 1758).

Nephropidae, Dana, 1852 - a family, in the order Decapoda, in the class Malacostraca, of the phylum Arthropoda. Example species Homarus gammarus, (Linnaeus, 1758).

Nephropoidea, Dana, 1852 - a superfamily, in the order Decapoda, in the class Malacostraca, of the phylum Arthropoda. Example species Homarus gammarus, (Linnaeus, 1758).

Nerophis, Rafinesque, 1810 - a genus, in the family Syngnathidae, in the order Syngnathiformes, in the class Actinopterygii, of the phylum Chordata. Example species Nerophis ophidion, (Linnaeus, 1758).

Noetiidae, Stewart, 1930 - a family, in the order Arcoida, in the class Bivalvia, of the phylum Mollusca. Example species Striarca lactea, (Linnaeus, 1758).

Nucella, Röding, 1798 - a genus, in the family Muricidae, in the order Neogastropoda, in the class Gastropoda, of the phylum Mollusca. Example species Nucella lapillus, (Linnaeus, 1758).

Nuculidae, Gray, 1824 - a family, in the order Nuculida, in the class Bivalvia, of the phylum Mollusca. Example species Ennucula tenuis, (Montagu, 1808).

Nuculida, Dall, 1889 - an order, in the class Bivalvia, of the phylum Mollusca. Example species Ennucula tenuis, (Montagu, 1808).

Nuculoidea, Gray, 1824 - a superfamily, in the order Nuculida, in the class Bivalvia, of the phylum Mollusca. Example species Ennucula tenuis, (Montagu, 1808).

Nudibranchia, Cuvier, 1817 - an order, in the class Gastropoda, of the phylum Mollusca. Example species Doris pseudoargus, Rapp, 1827.

Nyantheae, Carlgren, 1899 - a suborder, in the order Actiniaria, in the class Anthozoa, of the phylum Cnidaria. Example species Actinia equina, (Linnaeus, 1758).

Nymphon, Fabricius, 1794 - a genus, in the family Nymphonidae, in the order Pantopoda, in the class Pycnogonida, of the phylum Arthropoda. Example species Nymphon gracile, Leach, 1814.

Nymphonidae, Wilson, 1878 - a family, in the order Pantopoda, in the class Pycnogonida, of the phylum Arthropoda. Example species Nymphon gracile, Leach, 1814.

Nymphonoidea, Pocock, 1904 - a superfamily, in the order Pantopoda, in the class Pycnogonida, of the phylum Arthropoda. Example species Nymphon gracile, Leach, 1814.

Ocenebra, Gray, 1847 - a genus, in the family Muricidae, in the order Neogastropoda, in the class Gastropoda, of the phylum Mollusca. Example species Ocenebra erinaceus, (Linnaeus, 1758).

Ocenebrinae, Cossmann, 1903 - a subfamily, in the family Muricidae, in the order Neogastropoda, in the class Gastropoda, of the phylum Mollusca. Example species Nucella lapillus, (Linnaeus, 1758).

Octopoda, Leach, 1818 - an order, in the class Cephalopoda, of the phylum Mollusca. Example species Eledone cirrhosa, (Lamarck, 1798).

Octopodidae, d'Orbigny, 1839 - a family, in the order Octopoda, in the class Cephalopoda, of the phylum Mollusca. Example species Eledone cirrhosa, (Lamarck, 1798).

Octopodiformes, Berthold & Engeser, 1987 - an infraclass, in the class Cephalopoda, of the phylum Mollusca. Example species Eledone cirrhosa, (Lamarck, 1798).

Octopodoidea, - a superfamily, in the order Octopoda, in the class Cephalopoda, of the phylum Mollusca. Example species Eledone cirrhosa, (Lamarck, 1798).

Omalogyra, Jeffreys, 1867 - a genus, in the family Omalogyridae, in the class Gastropoda, of the phylum Mollusca. Example species Omalogyra atomus, (Philippi, 1841).

Omalogyridae, G.O. Sars, 1878 - a family, in the class Gastropoda, of the phylum Mollusca. Example species Omalogyra atomus, (Philippi, 1841).

Omalogyroidea, G.O. Sars, 1878 - a superfamily, in the class Gastropoda, of the phylum Mollusca. Example species Omalogyra atomus, (Philippi, 1841).

Onchidella, J. E. Gray, 1850 - a genus, in the family Onchidiidae, in the order Systellommatophora, in the class Gastropoda, of the phylum Mollusca. Example species Onchidella celtica, (Cuvier, 1817).

Onchidiidae, Rafinesque, 1815 - a family, in the order Systellommatophora, in the class Gastropoda, of the phylum Mollusca. Example species Onchidella celtica, (Cuvier, 1817).

Onchidioidea, Rafinesque, 1815 - a superfamily, in the order Systellommatophora, in the class Gastropoda, of the phylum Mollusca. Example species Onchidella celtica, (Cuvier, 1817).

Onchidorididae, Gray, 1827 - a family, in the order Nudibranchia, in the class Gastropoda, of the phylum Mollusca. Example species Acanthodoris pilosa, (Abildgaard in Müller, 1789).

Onchidoridoidea, Gray, 1827 - a superfamily, in the order Nudibranchia, in the class Gastropoda, of the phylum Mollusca. Example species Acanthodoris pilosa, (Abildgaard in Müller, 1789).

Oniscidea, Latreille, 1802 - a suborder, in the order Isopoda, in the class Malacostraca, of the phylum Arthropoda. Example species Ligia oceanica, (Linnaeus, 1767).

Ophiocomidae, Ljungman, 1867 - a family, in the order Ophiurida, in the class Ophiuroidea, of the phylum Echinodermata. Example species Ophiocomina nigra, (Abildgaard, in O.F. Müller, 1789).

Ophiocominae, - a subfamily, in the family Ophiocomidae, in the order Ophiurida, in the class Ophiuroidea, of the phylum Echinodermata. Example species Ophiocomina nigra, (Abildgaard, in O.F. Müller, 1789).

Ophiocomina, Koehler, 1922 - a genus, in the family Ophiocomidae, in the order Ophiurida, in the class Ophiuroidea, of the phylum Echinodermata. Example species Ophiocomina nigra, (Abildgaard, in O.F. Müller, 1789).

Ophiurida, Müller & Troschel, 1840 - an order, in the class Ophiuroidea, of the phylum Echinodermata. Example species Amphipholis squamata, (Delle Chiaje, 1828).

Ophiurina, Müller & Troschel, 1840 - a suborder, in the order Ophiurida, in the class Ophiuroidea, of the phylum Echinodermata. Example species Amphipholis squamata, (Delle Chiaje, 1828).

Ophiuroidea, Gray, 1840 - a class, of the phylum Echinodermata. Example species Amphipholis squamata, (Delle Chiaje, 1828).

Ophlitaspongia, Bowerbank, 1866 - a genus, in the family Microcionidae, in the order Poecilosclerida, in the class Demospongiae, of the phylum Porifera. Example species Ophlitaspongia papilla, Bowerbank, 1866.

Ophlitaspongiinae, de Laubenfels, 1936 - a subfamily, in the family Microcionidae, in the order Poecilosclerida, in the class Demospongiae, of the phylum Porifera. Example species Ophlitaspongia papilla, Bowerbank, 1866.

Opisthobranchia, - an infraclass, in the class Gastropoda, of the phylum Mollusca. Example species Aplysia depilans, Gmelin, 1791.

Oscarella, Vosmaer, 1884 - a genus, in the family Oscarellidae, in the order Homosclerophorida, in the class Homoscleromorpha, of the phylum Porifera. Example species Oscarella lobularis, (Schmidt, 1862).

Oscarellidae, Lendenfeld, 1887 - a family, in the order Homosclerophorida, in the class Homoscleromorpha, of the phylum Porifera. Example species Oscarella lobularis, (Schmidt, 1862).

Oshurkovia, Grischenko & Mawatari, 2005 - a genus, in the family Umbonulidae, in the order Cheilostomatida, in the class Gymnolaemata, of the phylum Bryozoa. Example species Oshurkovia littoralis, (Hastings, 1944).

Osilinus, Philippi, 1847 - a genus, in the family Trochidae, in the class Gastropoda, of the phylum Mollusca. Example species Osilinus lineatus, (da Costa, 1778).

Ostracoda, Latreille, 1802 - a class, of the phylum Arthropoda. Example species Leptocythere pellucida, (Baird, 1850).

Paguridae, Latreille, 1802 - a family, in the order Decapoda, in the class Malacostraca, of the phylum Arthropoda. Example species Pagurus bernhardus, (Linnaeus, 1758).

Paguroidea, Latreille, 1802 - a superfamily, in the order Decapoda, in the class Malacostraca, of the phylum Arthropoda. Example species Pagurus bernhardus, (Linnaeus, 1758).

Pagurus, Fabricius, 1775 - a genus, in the family Paguridae, in the order Decapoda, in the class Malacostraca, of the phylum Arthropoda. Example species Pagurus bernhardus, (Linnaeus, 1758).

Pandalidae, Haworth, 1825 - a family, in the order Decapoda, in the class Malacostraca, of the phylum Arthropoda. Example species Pandalus montagui, Leach, 1814 in Leach, 1813-1814.

Pandaloidea, Haworth, 1825 - a superfamily, in the order Decapoda, in the class Malacostraca, of the phylum Arthropoda. Example species Pandalus montagui, Leach, 1814 in Leach, 1813-1814.

Pandalus, Leach, 1814 in Leach, 1813-1814 - a genus, in the family Pandalidae, in the order Decapoda, in the class Malacostraca, of the phylum Arthropoda. Example species Pandalus montagui, Leach, 1814 in Leach, 1813-1814.

Pantopoda, Gerstäcker, 1863 - an order, in the class Pycnogonida, of the phylum Arthropoda. Example species Nymphon gracile, Leach, 1814.

Papillicardium, Sacco, 1899 - a genus, in the family Cardiidae, in the order Veneroida, in the class Bivalvia, of the phylum Mollusca. Example species Papillicardium papillosum, (Poli, 1791).

Parablennius, Miranda-Ribeiro, 1915 - a genus, in the family Blenniidae, in the order Perciformes, in the class Actinopterygii, of the phylum Chordata. Example species Parablennius gattorugine, (Linnaeus, 1758).

Paracentrotus, Morensen, 1903b - a genus, in the family Parechinidae, in the order Camarodonta, in the class Echinoidea, of the phylum Echinodermata. Example species Paracentrotus lividus, (Lamarck, 1816).

Parechinidae, Mortensen, 1903b - a family, in the order Camarodonta, in the class Echinoidea, of the phylum Echinodermata. Example species Paracentrotus lividus, (Lamarck, 1816).

Parvicardium, Monterosato, 1884 - a genus, in the family Cardiidae, in the order Veneroida, in the class Bivalvia, of the phylum Mollusca. Example species Parvicardium pinnulatum, (Conrad, 1831).

Passeriformes, - an order, in the class Aves, of the phylum Chordata. Example species Hirundo rustica, Linnaeus, 1758.

Patella, Linnaeus, 1758 - a genus, in the family Patellidae, in the class Gastropoda, of the phylum Mollusca. Example species Patella ulyssiponensis, Linnaeus, 1758.

Patellidae, Rafinesque, 1815 - a family, in the class Gastropoda, of the phylum Mollusca. Example species Patella ulyssiponensis, Linnaeus, 1758.

Patellogastropoda, Lindberg, 1986 - a subclass, in the class Gastropoda, of the phylum Mollusca. Example species Patella ulyssiponensis, Linnaeus, 1758.

Patelloidea, Rafinesque, 1815 - a superfamily, in the class Gastropoda, of the phylum Mollusca. Example species Patella ulyssiponensis, Linnaeus, 1758.

Pecten, O.F. Müller, 1776 - a genus, in the family Pectinidae, in the order Pectinoida, in the class Bivalvia, of the phylum Mollusca. Example species Pecten maximus, (Linnaeus, 1758).

Pectinidae, Rafinesque, 1815 - a family, in the order Pectinoida, in the class Bivalvia, of the phylum Mollusca. Example species Mimachlamys varia, (Linnaeus, 1758).

Pectininae, Wilkes, 1810 - a subfamily, in the family Pectinidae, in the order Pectinoida, in the class Bivalvia, of the phylum Mollusca. Example species Pecten maximus, (Linnaeus, 1758).

Pectinini, Lamarck, 1819 - a tribe, in the family Pectinidae, in the order Pectinoida, in the class Bivalvia, of the phylum Mollusca. Example species Pecten maximus, (Linnaeus, 1758).

Pectinoida, Gray, 1854 - an order, in the class Bivalvia, of the phylum Mollusca. Example species Mimachlamys varia, (Linnaeus, 1758).

Pectinoidea, Rafinesque, 1815 - a superfamily, in the order Pectinoida, in the class Bivalvia, of the phylum Mollusca. Example species Mimachlamys varia, (Linnaeus, 1758).

Pelagiidae, - a family, in the order Semaeostomeae, in the class Scyphozoa, of the phylum Cnidaria. Example species Chrysaora hysoscella, (Linnaeus, 1767).

Peracarida, Calman, 1904 - a superorder, in the class Malacostraca, of the phylum Arthropoda. Example species Ligia oceanica, (Linnaeus, 1767).

Perciformes, - an order, in the class Actinopterygii, of the phylum Chordata. Example species Labrus bergylta, Ascanius, 1767.

Perophora, Wiegmann, 1835 - a genus, in the family Perophoridae, in the order Phlebobranchia, in the class Ascidiacea, of the phylum Chordata. Example species Perophora listeri, Wiegman, 1835.

Perophoridae, Giard, 1872 - a family, in the order Phlebobranchia, in the class Ascidiacea, of the phylum Chordata. Example species Perophora listeri, Wiegman, 1835.

Phallusia, Savigny, 1816 - a genus, in the family Ascidiidae, in the order Phlebobranchia, in the class Ascidiacea, of the phylum Chordata. Example species Phallusia mammillata, (Cuvier, 1815).

Phasianellidae, Swainson, 1840 - a family, in the class Gastropoda, of the phylum Mollusca. Example species Tricolia pullus, (Linnaeus, 1758).

Phasianelloidea, Swainson, 1840 - a superfamily, in the class Gastropoda, of the phylum Mollusca. Example species Tricolia pullus, (Linnaeus, 1758).

Phlebobranchia, Lahille, 1886 - an order, in the class Ascidiacea, of the phylum Chordata. Example species Ascidia conchilega, Moeller, 1842.

Pholidae, - a family, in the order Perciformes, in the class Actinopterygii, of the phylum Chordata. Example species Pholis gunnellus, (Linnaeus, 1758).

Pholis, Scopoli, 1777 - a genus, in the family Pholidae, in the order Perciformes, in the class Actinopterygii, of the phylum Chordata. Example species Pholis gunnellus, (Linnaeus, 1758).

Phyllodocidae, Örsted, 1843 - a family, in the order Phyllodocida, in the class Polychaeta, of the phylum Annelida. Example species Eulalia viridis, (Linnaeus, 1767).

Phyllodocida, - an order, in the class Polychaeta, of the phylum Annelida. Example species Aphrodita aculeata, Linnaeus, 1758.

Phyllodociformia, - a suborder, in the order Phyllodocida, in the class Polychaeta, of the phylum Annelida. Example species Eulalia viridis, (Linnaeus, 1767).

Pilumnidae, Samouelle, 1819 - a family, in the order Decapoda, in the class Malacostraca, of the phylum Arthropoda. Example species Pilumnus hirtellus, (Linnaeus, 1761).

Pilumninae, Samouelle, 1819 - a subfamily, in the family Pilumnidae, in the order Decapoda, in the class Malacostraca, of the phylum Arthropoda. Example species Pilumnus hirtellus, (Linnaeus, 1761).

Pilumnoidea, Samouelle, 1819 - a superfamily, in the order Decapoda, in the class Malacostraca, of the phylum Arthropoda. Example species Pilumnus hirtellus, (Linnaeus, 1761).

Pilumnus, Leach, 1816 - a genus, in the family Pilumnidae, in the order Decapoda, in the class Malacostraca, of the phylum Arthropoda. Example species Pilumnus hirtellus, (Linnaeus, 1761).

Pisa, Leach, 1814 - a genus, in the family Epialtidae, in the order Decapoda, in the class Malacostraca, of the phylum Arthropoda. Example species Pisa tetraodon, (Pennant, 1777).

Pisces, - a superclass2, of the phylum Chordata. Example species Scyliorhinus canicula, (Linnaeus, 1758).

Pisidia, Leach, 1820 - a genus, in the family Porcellanidae, in the order Decapoda, in the class Malacostraca, of the phylum Arthropoda. Example species Pisidia longicornis, (Linnaeus, 1767).

Pisinae, Dana, 1851 - a subfamily, in the family Epialtidae, in the order Decapoda, in the class Malacostraca, of the phylum Arthropoda. Example species Pisa tetraodon, (Pennant, 1777).

Placida, Trinchese, 1876 - a genus, in the family Limapontiidae, in the order Sacoglossa, in the class Gastropoda, of the phylum Mollusca. Example species Placida dendritica, (Alder & Hancock, 1843).

Plakobranchidae, Gray, 1840 - a family, in the order Sacoglossa, in the class Gastropoda, of the phylum Mollusca. Example species Elysia viridis, (Montagu, 1804).

Plakobranchoidea, Gray, 1840 - a superfamily, in the order Sacoglossa, in the class Gastropoda, of the phylum Mollusca. Example species Elysia viridis, (Montagu, 1804).

Platyhelminthes, - a phylum.

Pleocyemata, Burkenroad, 1963 - a suborder, in the order Decapoda, in the class Malacostraca, of the phylum Arthropoda. Example species Galathea strigosa, (Linnaeus, 1761).

Pleurobranchidae, Gray, 1827 - a family, in the order Pleurobranchomorpha, in the class Gastropoda, of the phylum Mollusca. Example species Berthella plumula, (Montagu, 1803).

Pleurobranchoidea, Gray, 1827 - a superfamily, in the order Pleurobranchomorpha, in the class Gastropoda, of the phylum Mollusca. Example species Berthella plumula, (Montagu, 1803).

Pleurobranchomorpha, - an order, in the class Gastropoda, of the phylum Mollusca. Example species Berthella plumula, (Montagu, 1803).

Pleurobranchus, Cuvier, 1804 - a genus, in the family Pleurobranchidae, in the order Pleurobranchomorpha, in the class Gastropoda, of the phylum Mollusca. Example species Pleurobranchus membranaceus, (Montagu, 1815).

Pleuronectes, - a genus, in the family Pleuronectidae, in the order Pleuronectiformes, in the class Actinopterygii, of the phylum Chordata. Example species Pleuronectes platessa, Linnaeus, 1758.

Pleuronectidae, - a family, in the order Pleuronectiformes, in the class Actinopterygii, of the phylum Chordata. Example species Pleuronectes platessa, Linnaeus, 1758.

Pleuronectiformes, - an order, in the class Actinopterygii, of the phylum Chordata. Example species Pleuronectes platessa, Linnaeus, 1758.

Podocopa, Sars, 1866 - a subclass, in the class Ostracoda, of the phylum Arthropoda. Example species Leptocythere pellucida, (Baird, 1850).

Podocopida, Sars, 1866 - an order, in the class Ostracoda, of the phylum Arthropoda. Example species Leptocythere pellucida, (Baird, 1850).

Poecilosclerida, Topsent, 1928 - an order, in the class Demospongiae, of the phylum Porifera. Example species Lissodendoryx grisea, (Hansen, 1885).

Polybiidae, Ortmann, 1893 - a family, in the order Decapoda, in the class Malacostraca, of the phylum Arthropoda. Example species Necora puber, (Linnaeus, 1767).

Polyceridae, Alder & Hancock, 1845 - a family, in the order Nudibranchia, in the class Gastropoda, of the phylum Mollusca. Example species Limacia clavigera, (O.F. Müller, 1776).

Polyceroidea, Alder & Hancock, 1845 - a superfamily, in the order Nudibranchia, in the class Gastropoda, of the phylum Mollusca. Example species Limacia clavigera, (O.F. Müller, 1776).

Polychaeta, Grube, 1850 - a class, of the phylum Annelida. Example species Aphrodita aculeata, Linnaeus, 1758.

Polycladida, Lang, 1884 - an order, in the class Rhabditophora, of the phylum Platyhelminthes. Example species Leptoplana tremellaris, (Müller OF, 1773).

Polyclinidae, Milne-Edwards, 1841 - a family, in the order Aplousobranchia, in the class Ascidiacea, of the phylum Chordata. Example species Aplidium turbinatum, (Savigny, 1816).

Polynoidae, Malmgren, 1867 - a family, in the order Phyllodocida, in the class Polychaeta, of the phylum Annelida. Example species Malmgreniella lunulata, (Delle Chiaje, 1830).

Polynoinae, Kinberg, 1856 - a subfamily, in the family Polynoidae, in the order Phyllodocida, in the class Polychaeta, of the phylum Annelida. Example species Malmgreniella lunulata, (Delle Chiaje, 1830).

Polyplacophora, Gray, 1821 - a class, of the phylum Mollusca. Example species Lepidochitona cinerea, (Linnaeus, 1767).

Porcellana, Lamarck, 1801 - a genus, in the family Porcellanidae, in the order Decapoda, in the class Malacostraca, of the phylum Arthropoda. Example species Porcellana platycheles, (Pennant, 1777).

Porcellanidae, Haworth, 1825 - a family, in the order Decapoda, in the class Malacostraca, of the phylum Arthropoda. Example species Pisidia longicornis, (Linnaeus, 1767).

Porifera, - a phylum.

Portunidae, Rafinesque, 1815 - a family, in the order Decapoda, in the class Malacostraca, of the phylum Arthropoda. Example species Carcinus maenas, (Linnaeus, 1758).

Portunoidea, Rafinesque, 1815 - a superfamily, in the order Decapoda, in the class Malacostraca, of the phylum Arthropoda. Example species Necora puber, (Linnaeus, 1767).

Primates, - an order, in the class Mammalia, of the phylum Chordata. Example species Homo sapiens, Linnaeus, 1758.

Protobranchia, Pelseneer, 1889 - a subclass, in the class Bivalvia, of the phylum Mollusca. Example species Ennucula tenuis, (Montagu, 1808).

Psammechinus, L. Agassiz & Desor, 1846 - a genus, in the family Parechinidae, in the order Camarodonta, in the class Echinoidea, of the phylum Echinodermata. Example species Psammechinus miliaris, (P.L.S. Müller, 1771).

Psammobiidae, Fleming, 1828 - a family, in the order Veneroida, in the class Bivalvia, of the phylum Mollusca. Example species Gari tellinella, (Lamarck, 1818).

Pteriomorphia, Beurlen, 1944 - a subclass, in the class Bivalvia, of the phylum Mollusca. Example species Striarca lactea, (Linnaeus, 1758).

Pulmonata, - an infraclass, in the class Gastropoda, of the phylum Mollusca. Example species Onchidella celtica, (Cuvier, 1817).

Pycnogonida, Latreille, 1810 - a class, of the phylum Arthropoda. Example species Nymphon gracile, Leach, 1814.

Pycnogonidae, Wilson, 1878 - a family, in the order Pantopoda, in the class Pycnogonida, of the phylum Arthropoda. Example species Pycnogonum litorale, (Ström, 1762).

Pycnogonoidea, Pocock, 1904 - a superfamily, in the order Pantopoda, in the class Pycnogonida, of the phylum Arthropoda. Example species Pycnogonum litorale, (Ström, 1762).

Pycnogonum, Bruennich, 1764 - a genus, in the family Pycnogonidae, in the order Pantopoda, in the class Pycnogonida, of the phylum Arthropoda. Example species Pycnogonum litorale, (Ström, 1762).

Raja, Linnaeus, 1758 - a genus, in the family Rajidae, in the order Rajiformes, in the class Elasmobranchii, of the phylum Chordata. Example species Raja clavata, Linnaeus, 1758.

Rajidae, - a family, in the order Rajiformes, in the class Elasmobranchii, of the phylum Chordata. Example species Raja clavata, Linnaeus, 1758.

Rajiformes, - an order, in the class Elasmobranchii, of the phylum Chordata. Example species Raja clavata, Linnaeus, 1758.

Raphitoma, Bellardi, 1848 - a genus, in the family Conidae, in the order Neogastropoda, in the class Gastropoda, of the phylum Mollusca. Example species Raphitoma linearis, (Montagu, 1803).

Raphitominae, Bellardi, 1875 - a subfamily, in the family Conidae, in the order Neogastropoda, in the class Gastropoda, of the phylum Mollusca. Example species Raphitoma linearis, (Montagu, 1803).

Reptilia, Laurenti, 1768 - a class, of the phylum Chordata. Example species Lacerta vivipara, Von Jacquin, 1787.

Rhabditophora, Ehlers, 1985 - a class, of the phylum Platyhelminthes. Example species Leptoplana tremellaris, (Müller OF, 1773).

Rissoa, Freminville in Desmarest, 1814 - a genus, in the family Rissoidae, in the order Littorinimorpha, in the class Gastropoda, of the phylum Mollusca. Example species Rissoa parva, (da Costa, 1778).

Rissoella, Gray, 1847 - a genus, in the family Rissoellidae, in the class Gastropoda, of the phylum Mollusca. Example species Rissoella opalina, (Jeffreys, 1848).

Rissoellidae, Gray, 1850 - a family, in the class Gastropoda, of the phylum Mollusca. Example species Rissoella opalina, (Jeffreys, 1848).

Rissoelloidea, Gray, 1850 - a superfamily, in the class Gastropoda, of the phylum Mollusca. Example species Rissoella opalina, (Jeffreys, 1848).

Rissoidae, Gray, 1847 - a family, in the order Littorinimorpha, in the class Gastropoda, of the phylum Mollusca. Example species Alvania beanii, (Hanley in Thorpe, 1844).

Rissoinae, Gray, 1847 - a subfamily, in the family Rissoidae, in the order Littorinimorpha, in the class Gastropoda, of the phylum Mollusca. Example species Alvania beanii, (Hanley in Thorpe, 1844).

Rissooidea, Gray, 1847 - a superfamily, in the order Littorinimorpha, in the class Gastropoda, of the phylum Mollusca. Example species Alvania beanii, (Hanley in Thorpe, 1844).

Rostanga, Bergh, 1879 - a genus, in the family Discodorididae, in the order Nudibranchia, in the class Gastropoda, of the phylum Mollusca. Example species Rostanga rubra, (Risso, 1818).

Runcinacea, Burn, 1963 - an order, in the class Gastropoda, of the phylum Mollusca. Example species Runcina coronata, (de Quatrefages, 1844).

Runcina, Forbes [in Forbes & Hanley], 1851 - a genus, in the family Runcinidae, in the order Runcinacea, in the class Gastropoda, of the phylum Mollusca. Example species Runcina coronata, (de Quatrefages, 1844).

Runcinidae, H. Adams & A. Adams, 1854 - a family, in the order Runcinacea, in the class Gastropoda, of the phylum Mollusca. Example species Runcina coronata, (de Quatrefages, 1844).

Runcinoidea, H. Adams & A. Adams, 1854 - a superfamily, in the order Runcinacea, in the class Gastropoda, of the phylum Mollusca. Example species Runcina coronata, (de Quatrefages, 1844).

Sabellida, - an order, in the class Polychaeta, of the phylum Annelida. Example species Spirorbis corallinae, de Silva, Knight-Jones, 1962.

Sacoglossa, Ihering, 1876 - an order, in the class Gastropoda, of the phylum Mollusca. Example species Elysia viridis, (Montagu, 1804).

Sagartia, Gosse, 1855 - a genus, in the family Sagartiidae, in the order Actiniaria, in the class Anthozoa, of the phylum Cnidaria. Example species Sagartia elegans, (Dalyell, 1848).

Sagartiidae, Gosse, 1858 - a family, in the order Actiniaria, in the class Anthozoa, of the phylum Cnidaria. Example species Actinothoe sphyrodeta, (Gosse, 1858).

Sagartiogeton, Carlgren, 1924 - a genus, in the family Sagartiidae, in the order Actiniaria, in the class Anthozoa, of the phylum Cnidaria. Example species Sagartiogeton undatus, (Müller, 1778).

Schizoporella, Hincks, 1877 - a genus, in the family Schizoporellidae, in the order Cheilostomatida, in the class Gymnolaemata, of the phylum Bryozoa. Example species Schizoporella unicornis, (Johnston in Wood, 1844).

Schizoporellidae, Jullien, 1883 - a family, in the order Cheilostomatida, in the class Gymnolaemata, of the phylum Bryozoa. Example species Schizoporella unicornis, (Johnston in Wood, 1844).

Schizoporelloidea, Jullien, 1883 - a superfamily, in the order Cheilostomatida, in the class Gymnolaemata, of the phylum Bryozoa. Example species Schizoporella unicornis, (Johnston in Wood, 1844).

Scincomorpha, - an infraorder, in the order Squamata, in the class Reptilia, of the phylum Chordata. Example species Lacerta vivipara, Von Jacquin, 1787.

Scleractinia, - an order, in the class Anthozoa, of the phylum Cnidaria. Example species Caryophyllia smithii, Stokes & Broderip, 1828.

Scleroglossa, - a suborder, in the order Squamata, in the class Reptilia, of the phylum Chordata. Example species Lacerta vivipara, Von Jacquin, 1787.

Scolopacidae, - a family, in the order Charadriiformes, in the class Aves, of the phylum Chordata. Example species Arenaria interpres, (Linnaeus, 1758).

Scolopaci, - a suborder, in the order Charadriiformes, in the class Aves, of the phylum Chordata. Example species Arenaria interpres, (Linnaeus, 1758).

Scorpaena, - a genus, in the family Scorpaenidae, in the order Scorpaeniformes, in the class Actinopterygii, of the phylum Chordata. Example species Scorpaena porcus, Linnaeus, 1758.

Scorpaenidae, - a family, in the order Scorpaeniformes, in the class Actinopterygii, of the phylum Chordata. Example species Scorpaena porcus, Linnaeus, 1758.

Scorpaeniformes, - an order, in the class Actinopterygii, of the phylum Chordata. Example species Myoxocephalus scorpius, (Linnaeus, 1758).

Scutellina, Haeckel, 1896 - a suborder, in the order Clypeasteroida, in the class Echinoidea, of the phylum Echinodermata. Example species Echinocyamus pusillus, (O.F. Müller, 1776).

Scyliorhinidae, Gill, 1862 - a family, in the order Carcharhiniformes, in the class Elasmobranchii, of the phylum Chordata. Example species Scyliorhinus canicula, (Linnaeus, 1758).

Scyliorhinus, Blainville, 1816 - a genus, in the family Scyliorhinidae, in the order Carcharhiniformes, in the class Elasmobranchii, of the phylum Chordata. Example species Scyliorhinus canicula, (Linnaeus, 1758).

Scyphozoa, - a class, of the phylum Cnidaria. Example species Chrysaora hysoscella, (Linnaeus, 1767).

Selachii, - an infraclass, in the class Elasmobranchii, of the phylum Chordata. Example species Scyliorhinus canicula, (Linnaeus, 1758).

Semaeostomeae, - an order, in the class Scyphozoa, of the phylum Cnidaria. Example species Chrysaora hysoscella, (Linnaeus, 1767).

Semibalaninae, Newman & Ross, 1976 - a subfamily, in the family Archaeobalanidae, in the order Sessilia, in the class Maxillopoda, of the phylum Arthropoda. Example species Semibalanus balanoides, (Linnaeus, 1758).

Semibalanus, Pilsbry, 1916 - a genus, in the family Archaeobalanidae, in the order Sessilia, in the class Maxillopoda, of the phylum Arthropoda. Example species Semibalanus balanoides, (Linnaeus, 1758).

Sepiola, Leach, 1817 - a genus, in the family Sepiolidae, in the order Sepiolida, in the class Cephalopoda, of the phylum Mollusca. Example species Sepiola atlantica, d'Orbigny, 1839.

Sepiolidae, Leach, 1817 - a family, in the order Sepiolida, in the class Cephalopoda, of the phylum Mollusca. Example species Sepiola atlantica, d'Orbigny, 1839.

Sepiolida, Fioroni, 1981 - an order, in the class Cephalopoda, of the phylum Mollusca. Example species Sepiola atlantica, d'Orbigny, 1839.

Serpulidae, Rafinesque, 1815 - a family, in the order Sabellida, in the class Polychaeta, of the phylum Annelida. Example species Spirorbis corallinae, de Silva, Knight-Jones, 1962.

Sertulariidae, Lamouroux, 1812 - a family, in the order Leptothecata, in the class Hydrozoa, of the phylum Cnidaria. Example species Dynamena pumila, (Linnaeus, 1758).

Sessilia, Lamarck, 1818 - an order, in the class Maxillopoda, of the phylum Arthropoda. Example species Chthamalus montagui, Southward, 1976.

Simiiformes, - an infraorder, in the order Primates, in the class Mammalia, of the phylum Chordata. Example species Homo sapiens, Linnaeus, 1758.

Skeneopsidae, Iredale, 1915 - a family, in the order Littorinimorpha, in the class Gastropoda, of the phylum Mollusca. Example species Skeneopsis planorbis, (Fabricius O., 1780).

Skeneopsis, Iredale, 1915 - a genus, in the family Skeneopsidae, in the order Littorinimorpha, in the class Gastropoda, of the phylum Mollusca. Example species Skeneopsis planorbis, (Fabricius O., 1780).

Spatangoida, L. Agassiz, 1840a - an order, in the class Echinoidea, of the phylum Echinodermata. Example species Brissus unicolor, (Leske, 1778).

Sphaeromatidae, Latreille, 1825 - a family, in the order Isopoda, in the class Malacostraca, of the phylum Arthropoda. Example species Dynamene bidentata, (Adams, 1800).

Sphaeromatidea, Wägele, 1989 - a suborder, in the order Isopoda, in the class Malacostraca, of the phylum Arthropoda. Example species Dynamene bidentata, (Adams, 1800).

Sphaeromatoidea, Latreille, 1825 - a superfamily, in the order Isopoda, in the class Malacostraca, of the phylum Arthropoda. Example species Dynamene bidentata, (Adams, 1800).

Spinachia, Cuvier, 1816 - a genus, in the family Gasterosteidae, in the order Gasterosteiformes, in the class Actinopterygii, of the phylum Chordata. Example species Spinachia spinachia, (Linnaeus, 1758).

Spirobranchus, Blainville, 1818 - a genus, in the family Serpulidae, in the order Sabellida, in the class Polychaeta, of the phylum Annelida. Example species Spirobranchus triqueter, (Linnaeus, 1758).

Spirorbinae, Chamberlin, 1919 - a subfamily, in the family Serpulidae, in the order Sabellida, in the class Polychaeta, of the phylum Annelida. Example species Spirorbis corallinae, de Silva, Knight-Jones, 1962.

Spirorbis, Daudin, 1800 - a genus, in the family Serpulidae, in the order Sabellida, in the class Polychaeta, of the phylum Annelida. Example species Spirorbis corallinae, de Silva, Knight-Jones, 1962.

Spirorbis, - a subgenus, in the family Serpulidae, in the order Sabellida, in the class Polychaeta, of the phylum Annelida. Example species Spirorbis corallinae, de Silva, Knight-Jones, 1962.

Squamata, Oppel, 1811 - an order, in the class Reptilia, of the phylum Chordata. Example species Lacerta vivipara, Von Jacquin, 1787.

Stauromedusae, Haeckel, 1879 - an order, in the class Staurozoa, of the phylum Cnidaria. Example species Haliclystus auricula, (Rathke, 1806).

Staurozoa, Marques & Collins, 2004 - a class, of the phylum Cnidaria. Example species Haliclystus auricula, (Rathke, 1806).

Stolidobranchia, Lahille, 1887 - an order, in the class Ascidiacea, of the phylum Chordata. Example species Botrylloides leachii, (Savigny, 1816).

Striarca, Conrad, 1862 - a genus, in the family Noetiidae, in the order Arcoida, in the class Bivalvia, of the phylum Mollusca. Example species Striarca lactea, (Linnaeus, 1758).

Styela, Fleming, 1822 - a genus, in the family Styelidae, in the order Stolidobranchia, in the class Ascidiacea, of the phylum Chordata. Example species Styela plicata, (Lesueur, 1823).

Styelidae, Sluiter, 1895 - a family, in the order Stolidobranchia, in the class Ascidiacea, of the phylum Chordata. Example species Botrylloides leachii, (Savigny, 1816).

Suberites, Nardo, 1833 - a genus, in the family Suberitidae, in the order Hadromerida, in the class Demospongiae, of the phylum Porifera. Example species Suberites domuncula, (Olivi, 1792) .

Suberitidae, Schmidt, 1870 - a family, in the order Hadromerida, in the class Demospongiae, of the phylum Porifera. Example species Suberites domuncula, (Olivi, 1792) .

Syngnathidae, - a family, in the order Syngnathiformes, in the class Actinopterygii, of the phylum Chordata. Example species Nerophis ophidion, (Linnaeus, 1758).

Syngnathiformes, - an order, in the class Actinopterygii, of the phylum Chordata. Example species Nerophis ophidion, (Linnaeus, 1758).

Syngnathinae, - a subfamily, in the family Syngnathidae, in the order Syngnathiformes, in the class Actinopterygii, of the phylum Chordata. Example species Nerophis ophidion, (Linnaeus, 1758).

Systellommatophora, - an order, in the class Gastropoda, of the phylum Mollusca. Example species Onchidella celtica, (Cuvier, 1817).

Talochlamys, Iredale, 1935 - a genus, in the family Pectinidae, in the order Pectinoida, in the class Bivalvia, of the phylum Mollusca. Example species Talochlamys pusio, (Linnaeus, 1758).

Tectura, Gray, 1847 - a genus, in the family Lottiidae, in the class Gastropoda, of the phylum Mollusca. Example species Tectura virginea, (O.F. Müller, 1776).

Tellinoidea, Blainville, 1814 - a superfamily, in the order Veneroida, in the class Bivalvia, of the phylum Mollusca. Example species Gari tellinella, (Lamarck, 1818).

Terpios, Duchassaing & Michelotti, 1864 - a genus, in the family Suberitidae, in the order Hadromerida, in the class Demospongiae, of the phylum Porifera. Example species Terpios fugax, Duchassaing & Michelotti, 1864.

Tethya, Lamarck, 1815 - a genus, in the family Tethyidae, in the order Hadromerida, in the class Demospongiae, of the phylum Porifera. Example species Tethya aurantium, (Pallas, 1766).

Tethyidae, Gray, 1848 - a family, in the order Hadromerida, in the class Demospongiae, of the phylum Porifera. Example species Tethya aurantium, (Pallas, 1766).

Tetraclitoidea, Gruvel, 1903 - a superfamily, in the order Sessilia, in the class Maxillopoda, of the phylum Arthropoda. Example species Elminius modestus, Darwin, 1854.

Tetrapoda, - a superclass2, of the phylum Chordata. Example species Lacerta vivipara, Von Jacquin, 1787.

Thecostraca, Gruvel, 1905 - a subclass, in the class Maxillopoda, of the phylum Arthropoda. Example species Dosima fascicularis, Ellis & Solander, 1786.

Thenaria, Carlgren, 1899 - an infraorder, in the order Actiniaria, in the class Anthozoa, of the phylum Cnidaria. Example species Actinia equina, (Linnaeus, 1758).

Theria, - a subclass, in the class Mammalia, of the phylum Chordata. Example species Homo sapiens, Linnaeus, 1758.

Thoracica, Darwin, 1854 - a superorder, in the class Maxillopoda, of the phylum Arthropoda. Example species Dosima fascicularis, Ellis & Solander, 1786.

Trachinidae, - a family, in the order Perciformes, in the class Actinopterygii, of the phylum Chordata. Example species Echiichthys vipera, (Cuvier, 1829).

Tricolia, Risso, 1826 - a genus, in the family Phasianellidae, in the class Gastropoda, of the phylum Mollusca. Example species Tricolia pullus, (Linnaeus, 1758).

Triophinae, Odhner, 1941 - a subfamily, in the family Polyceridae, in the order Nudibranchia, in the class Gastropoda, of the phylum Mollusca. Example species Limacia clavigera, (O.F. Müller, 1776).

Triphora, Blainville, 1828 - a genus, in the family Triphoridae, in the class Gastropoda, of the phylum Mollusca. Example species Triphora perversa, (Linnaeus, 1758).

Triphoridae, Gray, 1847 - a family, in the class Gastropoda, of the phylum Mollusca. Example species Triphora perversa, (Linnaeus, 1758).

Triphoroidea, Gray, 1847 - a superfamily, in the class Gastropoda, of the phylum Mollusca. Example species Triphora perversa, (Linnaeus, 1758).

Trisopterus, Rafinesque, 1814 - a genus, in the family Gadidae, in the order Gadiformes, in the class Actinopterygii, of the phylum Chordata. Example species Trisopterus luscus, (Linnaeus, 1758).

Trivia, Gray, 1837 - a genus, in the family Triviidae, in the order Littorinimorpha, in the class Gastropoda, of the phylum Mollusca. Example species Trivia monacha, (da Costa, 1778).

Triviidae, Troschel, 1863 - a family, in the order Littorinimorpha, in the class Gastropoda, of the phylum Mollusca. Example species Erato voluta, (Montagu, 1803).

Triviinae, Troschel, 1863 - a subfamily, in the family Triviidae, in the order Littorinimorpha, in the class Gastropoda, of the phylum Mollusca. Example species Trivia monacha, (da Costa, 1778).

Trochidae, Rafinesque, 1815 - a family, in the class Gastropoda, of the phylum Mollusca. Example species Gibbula umbilicalis, (da Costa, 1778).

Trochoidea, Rafinesque, 1815 - a superfamily, in the class Gastropoda, of the phylum Mollusca. Example species Gibbula umbilicalis, (da Costa, 1778).

Tubularia, Linnaeus, 1758 - a genus, in the family Tubulariidae, in the order Anthoathecata, in the class Hydrozoa, of the phylum Cnidaria. Example species Tubularia indivisa, Linnaeus, 1758.

Tubulariidae, - a family, in the order Anthoathecata, in the class Hydrozoa, of the phylum Cnidaria. Example species Ectopleura larynx, (Ellis & Solander, 1786).

Tunicata, - a subphylum, of the phylum Chordata. Example species Clavelina lepadiformis, (Müller, 1776) .

Umbonulidae, Canu, 1904 - a family, in the order Cheilostomatida, in the class Gymnolaemata, of the phylum Bryozoa. Example species Oshurkovia littoralis, (Hastings, 1944).

Umbonulomorpha, Gordon, 1989 - a section, in the order Cheilostomatida, in the class Gymnolaemata, of the phylum Bryozoa. Example species Oshurkovia littoralis, (Hastings, 1944).

Urticina, Ehrenberg, 1834 - a genus, in the family Actiniidae, in the order Actiniaria, in the class Anthozoa, of the phylum Cnidaria. Example species Urticina felina, (Linnaeus, 1761).

Valvatida, Perrier, 1884 - an order, in the class Asteroidea, of the phylum Echinodermata. Example species Asterina gibbosa, (Pennant, 1777).

Valvifera, Sars, 1882 - a suborder, in the order Isopoda, in the class Malacostraca, of the phylum Arthropoda. Example species Idotea granulosa, Rathke, 1843.

Velutinidae, Gray, 1840 - a family, in the order Littorinimorpha, in the class Gastropoda, of the phylum Mollusca. Example species Lamellaria latens, (Müller O.F., 1776).

Velutinoidea, Gray, 1840 - a superfamily, in the order Littorinimorpha, in the class Gastropoda, of the phylum Mollusca. Example species Lamellaria latens, (Müller O.F., 1776).

Veneroida, Gray, 1854 - an order, in the class Bivalvia, of the phylum Mollusca. Example species Papillicardium papillosum, (Poli, 1791).

Vertebrata, - a subphylum, of the phylum Chordata. Example species Scyliorhinus canicula, (Linnaeus, 1758).

Vetigastropoda, Salvini-Plawen, 1980 - a subclass, in the class Gastropoda, of the phylum Mollusca. Example species Diodora graeca, (Linnaeus, 1758).

Xanthidae, MacLeay, 1838 - a family, in the order Decapoda, in the class Malacostraca, of the phylum Arthropoda. Example species Lophozozymus incisus, (H. Milne Edwards, 1834).

Xanthinae, MacLeay, 1838 - a subfamily, in the family Xanthidae, in the order Decapoda, in the class Malacostraca, of the phylum Arthropoda. Example species Xantho pilipes, A. Milne-Edwards, 1867.

Xantho, Leach, 1814 - a genus, in the family Xanthidae, in the order Decapoda, in the class Malacostraca, of the phylum Arthropoda. Example species Xantho pilipes, A. Milne-Edwards, 1867.

Xanthoidea, MacLeay, 1838 - a superfamily, in the order Decapoda, in the class Malacostraca, of the phylum Arthropoda. Example species Lophozozymus incisus, (H. Milne Edwards, 1834).

Zootoca, - a subgenus, in the family Lacertidae, in the order Squamata, in the class Reptilia, of the phylum Chordata. Example species Lacerta vivipara, Von Jacquin, 1787.

Zosiminae, Alcock, 1898 - a subfamily, in the family Xanthidae, in the order Decapoda, in the class Malacostraca, of the phylum Arthropoda. Example species Lophozozymus incisus, (H. Milne Edwards, 1834).