Between brackets is the number of accepted marine extant species
1 Click on "-" to collapse/hide all child taxa
2 Shows the number of accepted marine extant species within the taxon
3 The last expanded taxon is highlighted
4 Click on "+" to expand/show all child taxa
5 Click to see the taxon details page
- Biota (1 345)
- Kingdom Animalia (1 343)
- Phylum Annelida (482)
- Phylum Arthropoda (366)
- Phylum Brachiopoda (1)
- Phylum Bryozoa (75)
- Phylum Cephalorhyncha
- Phylum Chaetognatha (1)
- Phylum Chordata (35)
- Phylum Cnidaria (52)
- Phylum Coelenterata
- Phylum Echinodermata (43)
- Phylum Entoprocta (1)
- Phylum Hemichordata (6)
- Phylum Mollusca (253)
- Subphylum Aculifera
- Subphylum Conchifera
- Subphylum Placophora accepted as Polyplacophora
- Superclass Aplacophora
- Class Bivalvia (145)
- Subclass Autobranchia (131)
- Infraclass Heteroconchia (105)
- Subterclass Archiheterodonta (5)
- Subterclass Euheterodonta (100)
- Superorder Anomalodesmata (13)
- Superorder Imparidentia (87)
- Order Adapedonta (8)
- Order Cardiida (29)
- Order Galeommatida (12)
- Superfamily Galeommatoidea J. E. Gray, 1840 (12)
- Family Basterotiidae Cossmann, 1909 (1)
- Family Galeommatidae Gray, 1840 (1)
- Family Kelliidae Forbes & Hanley, 1848 accepted as Lasaeidae J. E. Gray, 1842
- Family Lasaeidae J. E. Gray, 1842 (10)
- Subfamily Montacutinae W. Clark, 1855 (7)
- Genus Erycina Lamarck, 1805
- Genus Hemilepton Cossmann, 1912 (1)
- Species Hemilepton nitidum (W. Turton, 1822)
- Genus Kellia W. Turton, 1822 (1)
- Genus Lepton W. Turton, 1822 (1)
- Genus Semierycina Cossmann & Peyrot, 1912 accepted as Hemilepton Cossmann, 1912
- Family Leptonidae Gray, 1847 accepted as Lasaeidae J. E. Gray, 1842
- Order Lucinida (12)
- Order Myida (4)
- Order Venerida (22)
- Superfamily Cyamioidea G. O. Sars, 1878
- Order Euheterodonta incertae sedis
- Subterclass Heterodonta
- Infraclass Pteriomorphia (26)
- Subclass Protobranchia (14)
- Class Caudofoveata (2)
- Class Cephalopoda (1)
- Class Gastropoda (95)
- Class Pelecypoda accepted as Bivalvia
- Class Polyplacophora (4)
- Class Scaphopoda (4)
- Class Solenogastres (2)
- Subclass Chaetodermomorpha accepted as Caudofoveata
- Phylum Nematoda
- Phylum Nemertea (9)
- Phylum Nemertina represented as Nemertea
- Phylum Phoronida (2)
- Phylum Platyhelminthes (2)
- Phylum Pogonophora accepted as Siboglinidae Caullery, 1914
- Phylum Porifera (14)
- Phylum Priapulida (1)
- Phylum Sipunculida accepted as Sipuncula
- Kingdom Chromista (2)
- Kingdom Protozoa
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