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
- Family Anopsiidae Pruvot-Fol, 1922 accepted as Hydromylidae Pruvot-Fol, 1942
- Family Clionidae Rafinesque, 1815
- Genus Cephalobrachia Bonnevie, 1913
- Genus Cephalobranchia accepted as Cephalobrachia Bonnevie, 1913
- Genus Cione accepted as Clione Pallas, 1774
- Genus Clione Pallas, 1774
- Genus Clionina Pruvot-Fol, 1924
- Genus Fowlerina Pelseneer, 1906
- Genus Massya Pruvot-Fol, 1924
- Genus Paedoclione Danforth, 1907
- Genus Paraclione Tesch, 1903
- Genus Thalassopterus Kwietniewski, 1910
- Genus Thliptodon Boas, 1886
- Genus Trichocyclus Eschscholtz, 1825 accepted as Clione Pallas, 1774
- Species Trichocyclus dumerilii Eschscholtz, 1825 accepted as Clione limacina (Phipps, 1774)
- Family Cliopsidae Costa, 1873
- Family Cymodoceidae Gray, 1840 accepted as Hydromylidae Pruvot-Fol, 1942
- Family Euribiidae Troschel, 1856 accepted as Hydromylidae Pruvot-Fol, 1942
- Family Halopsychidae Pelseneer, 1887 accepted as Hydromylidae Pruvot-Fol, 1942
- Family Hydromylidae Pruvot-Fol, 1942
- Family Laginiopsidae Pruvot-Fol, 1922
- Family Notobranchaeidae Pelseneer, 1886
- Family Pneumodermatidae Latreille, 1825
- Family Pterocymodoceidae Keferstein, 1862 accepted as Hydromylidae Pruvot-Fol, 1942
- Family Thliptodontidae Kwietniewski, 1902 accepted as Clionidae Rafinesque, 1815
- Order Helicinoidea †
- Order Heterobranchia incertae sedis
- Order Heterostropha
- 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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