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
- Phylum Monoblastozoa accepted as Animalia incertae sedis
- Phylum Nematoda
- Phylum Nematomorpha
- Phylum Nemertea
- Phylum Onychophora
- Phylum Orthonectida
- Phylum Phoronida
- Phylum Placozoa
- Phylum Platyhelminthes
- Class Cestoda
- Class Platyhelminthes (awaiting allocation)
- Class Platyhelminthes incertae sedis
- Class Trematoda
- Class Turbellaria
- Order Catenulida
- Order Eukalyptorhynchia (awaiting allocation)
- Order Haplopharyngida
- Order Kalyptorhynchia (awaiting allocation)
- Order Lecithoepitheliata
- Order Macrostomida
- Order Neorhabdocoela
- Family Acholadidae Hickman & Olsen, 1955
- Family Aculeorhynchidae Schilke, 1969
- Family Bertiliellidae Rieger & Sterrer, 1975
- Family Byrsophlebidae Graff, 1905
- Family Carcharodopharyngidae Bresslau, 1928-33
- Family Cicerinidae Meixner, 1928
- Family Ciliopharyngiellidae Ax, 1952
- Family Crassicolidae
- Family Cystiplanidae Karling, 1964
- Family Cytocystidae Karling, 1964 accepted as Cytocystididae Karling, 1964
- Family Cytocystididae Karling, 1964
- Family Dalyellidae accepted as Dalyelliidae Graff, 1905
- Family Dalyelliidae Graff, 1905
- Family Diascorhynchidae Meixner, 1929
- Family Diceratocephalidae Joffe, Cannon & Schockaert, 1998
- Family Didymorchidae
- Family Fecampiidae Graff, 1903
- Family Gnathorhynchidae Meixner, 1929
- Family Graffillidae Graff, 1904-08
- Family Hypoblepharinidae Bohmig, 1914
- Family Karkinorhynchidae Meixner, 1928
- Family Koinocystidae
- Family Kytorhynchidae Rieger, 1974
- Family Nematorhynchidae Schilke, 1969
- Family Notenteridae Joffe, Selivanova & Kornakova, 1997
- Family Placorhynchidae Meixner, 1938
- Family Polycystidae Meixner, 1924 accepted as Polycystididae Graff, 1905
- Family Promesostomidae Hartog, 1964
- Family Provorticidae Beklemischev, 1927
- Genus Annulovortex Beklemischev, 1953
- Genus Archivortex Reisinger, 1924
- Genus Baicalellia Nasonov, 1930
- Genus Balgetia Luther, 1962
- Genus Canetellia Ax, 1956
- Genus Coronopharynx Luther, 1962
- Genus Daelja Marcus, 1951
- Genus Drepanilla Ehlers, 1979
- Genus Eldenia Ax, 2008
- Genus Hangethellia Karling, 1940
- Genus Haplovejdovskya Ax, 1954
- Genus Haplovortex Reisinger, 1924
- Genus Kalyla Marcus, 1951
- Genus Kirgisella Beklemischev, 1927
- Genus Maxia Graff, 1903
- Genus Oekiocolax Reisinger, 1929
- Genus Pilgramilla Sekera, 1912
- Genus Pogaina Marcus, 1954
- Genus Prevortex Ferroniere, 1901
- Genus Provortex Graff, 1882
- Genus Provorticidorum Rixen, 1961
- Genus Schultzia Graff, 1882 accepted as Vejdovskya Graff, 1905
- Species Schultzia adriatica Dörler, 1900 accepted as Vejdovskya adriatica (Dörler, 1900)
- Species Schultzia pellucida (Graff, 1882) accepted as Vejdovskya pellucida (Schultze M, 1851)
- Species Schultzia pothyroideum Pereyaslawzewa, 1892 accepted as Vejdovskya pellucida (Schultze M, 1851)
- Genus Scillyvortex Faubel & Warwick, 2005 accepted as Trigonostomum Schmidt, 1852
- Genus Selimia Ax, 1959
- Genus Socorria de Beauchamp, 1913 accepted as Provortex Graff, 1882
- Genus Tamanawas Stephenson, Van Steenkiste & Leander, 2019
- Genus Vejdovskya Graff, 1905
- Family Psammorhynchidae Karling, 1956
- Family Pterastericolidae Meixner, 1925
- Family Pterastricolidae
- Family Schizorhynchidae Graff, 1905
- Family Scutariellidae Annandale, 1912
- Family Solenopharyngidae Graff, 1882
- Family Temnocephalidae Monticelli, 1899
- Family Trigonostomidae Graff, 1905
- Family Typhloplanidae Graff, 1905
- Family Typhlorhynchidae
- Family Umagillidae Wahl, 1910
- Order Polycladida
- Order Prolecithophora
- Order Proplicastomata
- Order Proseriata
- Order Rhabdocoela
- Order Tricladida
- Order Turbellaria (awaiting allocation)
- 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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