Between brackets is the number of accepted species
1 Click on "-" to collapse/hide all child taxa
2 Shows the number of accepted 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
- Kingdom Animalia
- Phylum Acanthocephala
- Phylum Agmata †
- Phylum Animalia (awaiting allocation)
- Phylum Animalia incertae sedis
- Phylum Annelida
- Phylum Arthropoda
- Phylum Brachiopoda
- Phylum Bryozoa
- Phylum Cephalorhyncha incertae sedis
- Phylum Chaetognatha
- Phylum Chitinozoa †
- Phylum Chordata
- Phylum Cnidaria
- Phylum Ctenophora
- Phylum Cycliophora
- Phylum Cycloneuralia incertae sedis
- Phylum Ecdysozoa incertae sedis †
- Phylum Echinodermata
- Phylum Entoprocta
- Phylum Gastrotricha
- Phylum Gnathostomulida
- Phylum Hemichordata
- Phylum Hyolitha †
- Phylum Kinorhyncha
- Phylum Lobopoda †
- Phylum Loricifera
- Phylum Micrognathozoa
- Phylum Mollusca
- Class Aplacophora
- Class Bivalvia
- Class Calyptoptomatida †
- Class Camerothecida
- Class Cephalopoda
- Class Cricoconarida †
- Class Gastropoda
- Subclass Neritimorpha
- Subclass Neritimorpha incertae sedis
- Subclass Vetigastropoda
- Subclass Vetigastropoda incertae sedis
- Order Acochlidiacea
- Order Acochlidioidea
- Order Allogastropoda †
- Order Anaspidea
- Order Archaeogastropoda
- Order Archaeopulmonata
- Order Architaenioglossa
- Order Architaenoglossa accepted as Architaenioglossa
- Order Basommatophora
- Order Basommatophora incertae sedis
- Order Bellerophontida †
- Order Caenogastropoda (awaiting allocation)
- Order Caenogastropoda incertae sedis
- Order Cephalaspidea
- Order Cocculiniformia
- Order Coenogastropoda incertae sedis
- Order Cylindrobullida
- Order Cyrtoneritimorpha †
- Order Docoglossa
- Order Ellobiida
- Order Eogastropoda
- Order Euomphalina †
- Order Eupulmonata incertae sedis
- Order Gastropoda (awaiting allocation)
- Order Gastropoda incertae sedis
- Order Gymnosomata
- Order Helicinoidea †
- Order Heterobranchia incertae sedis
- Order Heterostropha
- Family Acteonellidae Gill, 1871 †
- Family Acteonidae d'Orbigny, 1835
- Family Amathinidae Ponder, 1987
- Family Ampezzanildidae Bandel, 1995 †
- Family Amphitomariidae Bandel, 1994 †
- Family Anoptychiidae Bandel, 1995 †
- Genus Anoptychia Koken, 1892 †
- Genus Turristylus Blaschke, 1905 †
- Family Aplustridae Gray, 1847
- Family Architectonicidae J.E. Gray in M.E. Gray, 1850
- Family Bullinidae Lamarck, 1801
- Family Cassianaxidae †
- Family Cassianebalidae Bandel, 1996 †
- Family Ceritellidae Wenz, 1938 †
- Family Cimidae Warén, 1993
- Family Cornirostridae Ponder, 1990
- Family Cylindrobullinidae Wenz, 1938 †
- Family Dolomitellidae †
- Family Donaldinidae Bandel, 1994 † accepted as Streptacididae Knight, 1931 †
- Family Ebalidae Warén, 1995 accepted as Murchisonellidae Casey, 1904
- Family Glacidorbidae Ponder, 1986
- Family Gordenellidae †
- Family Heteroneritidae †
- Family Heterostrophia (awaiting allocation)
- Family Heterosubulitidae Bandel, 2002 †
- Family Hyalogyrinidae Warén & Bouchet, 1993
- Family Hydatinidae Pilsbry, 1895 accepted as Aplustridae Gray, 1847
- Family Itieriidae Cossmann, 1896 † accepted as Acteonellidae Gill, 1871 †
- Family Kuskokwimiidae Frýda & Blodgett, 2001 †
- Family Mathildidae Dall, 1889
- Family Misurinellidae Bandel, 1994 †
- Family Murchisonellidae Casey, 1904
- Family Nerineidae Zittel, 1873 †
- Family Nerinellidae Pchelintsev, 1960 †
- Family Odostomiidae Pelseneer, 1928 accepted as Pyramidellidae Gray, 1840
- Family Omalogyridae G.O. Sars, 1878
- Family Orbitestellidae Iredale, 1917
- Family Provalvatidae †
- Family Pyramidellidae Gray, 1840
- Family Pyramidelloidea incertae sedis
- Family Ringiculidae Philippi, 1853
- Family Rissoellidae Gray, 1850
- Family Streptacididae Knight, 1931 †
- Family Stuoraxidae Bandel, 1994 †
- Family Tjaernoeiidae Warén, 1991
- Family Tjaernoiidae accepted as Tjaernoeiidae Warén, 1991
- Family Tofanellidae Bandel, 1995 †
- Family Tornatellidae Fleming, 1828 accepted as Acteonidae d'Orbigny, 1835
- Family Trachoecidae Bandel, 1994 †
- Family Trochactaeonidae Hacobjan, 1963 † accepted as Acteonellidae Gill, 1871 †
- Family Tubiferidae Cossmann, 1895 †
- Family Umboneidae Lyssenko & Aliev, 1987 † accepted as Nerineidae Zittel, 1873 †
- Family Umboniidae Lyssenko & Aliev, 1987 † accepted as Nerineidae Zittel, 1873 †
- Family Valvatidae Gray, 1840
- Family Valvatoidea (awaiting allocation)
- Family Xylodisculidae Warén, 1992
- Family Zardinellidae †
- Genus Masaevia Guzhov & Shapovalov, 2019 †
- Genus Racheliella Nützel, 2018 †
- Order Heterostrophia accepted as Heterostropha
- Order Hygrophila
- Order Hypsogastropoda incertae sedis
- Order Littorinimorpha
- Order Macluritina †
- Order Mesogastropoda
- Order Mimospirida †
- Order Murchisoniina †
- Order Muricoidea
- Order Neogastropoda
- Order Neomphalina incertae sedis
- Order Neotaenioglossa
- Order Neritoina †
- Order Notaspidea
- Order Nudibranchia
- Order Opisthobranchia (awaiting allocation)
- Order Orthogastropoda (awaiting allocation) †
- Order Paragastropoda †
- Order Patellogastropoda
- Order Patellogastropoda incertae sedis
- Order Pleurobranchacea
- Order Pleurobranchomorpha
- Order Prosobranchia (awaiting allocation)
- Order Ptenoglossa
- Order Pulmonata (awaiting allocation)
- Order Pulmonata incertae sedis
- Order Runcinoidea
- Order Sacoglossa
- Order Sorbeoconcha
- Order Stenoglossa
- Order Stylommatophora
- Order Systellommatophora
- Order Thecosomata
- Order Tonnoidea
- Order Umbraculida
- Order Umbraculomorpha
- Class Helcionelloida †
- Class Mollusca (awaiting allocation)
- Class Mollusca incertae sedis
- Class Monoplacophora
- Class Paragastropoda †
- Class Polyplacophora
- Class Rostroconchia †
- Class Scaphopoda
- Class Stenothecoida †
- Class Tentaculita †
- Family Maikhanellidae Missarzhevsky, 1989 †
- Genus Lingulocaris Salter, 1866 †
- Genus Modiolocaris Peach in Jehu & Campbell, 1917 † accepted as Lingulocaris Salter, 1866 †
- Phylum Monoblastozoa accepted as Animalia incertae sedis
- Phylum Nematoda
- Phylum Nematomorpha
- Phylum Nemertea
- Phylum Onychophora
- Phylum Orthonectida
- Phylum Phoronida
- Phylum Placozoa
- Phylum Platyhelminthes
- Phylum Pogonophora accepted as Siboglinidae Caullery, 1914
- Phylum Porifera
- Phylum Priapula accepted as Priapulida
- Phylum Priapulida
- Phylum Problematica † accepted as Animalia incertae sedis
- Phylum Rhombozoa
- Phylum Rotifera
- Phylum Scalidophora incertae sedis
- Phylum Sipuncula
- Phylum Tardigrada
- Phylum Trace fossils †
- Phylum Vendobionta †
- Phylum Vestimentifera accepted as Siboglinidae Caullery, 1914
- Phylum Vetulicolia †
- Phylum Vinctiplicata incertae sedis †
- Phylum Xenacoelomorpha
- Genus Trilobocaris Pribyl, 1953 †
- Kingdom Archaea
- Kingdom Bacteria
- Kingdom Chromista
- Kingdom Fungi
- Kingdom Plantae
- Kingdom Protista accepted as Protozoa
- Kingdom Protozoa
- Kingdom Viruses
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