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
- Order Actinocerida †
- Order Agoniatitida †
- Order Ammonitida †
- Order Ammonoidea † accepted as Ammonitida †
- Order Anarcestida †
- Order Ancyloceratida †
- Order Antarcticerida †
- Order Ascoceratida †
- Order Aulacocerida †
- Order Bactritoidea (awaiting allocation) †
- Order Barrandeocerida †
- Order Bassleroceratida †
- Order Basslerocerida † accepted as Bassleroceratida †
- Order Belemnitida †
- Order Belemnoidea incertae sedis †
- Order Boletzkyida
- Order Cephalopoda (awaiting allocation)
- Order Cephalopoda incertae sedis
- Order Ceratitida †
- Order Clymeniida †
- Order Coleoidea (awaiting allocation)
- Order Coleoidea incertae sedis
- Order Colorthocerida †
- Order Decapoda accepted as Teuthoidea
- Order Diplobelida †
- Order Discosorida †
- Order Dissidocerida †
- Order Donovaniconida †
- Order Ellesmeroceratida † accepted as Ellesmerocerida †
- Order Ellesmerocerida †
- Order Endocerida †
- Order Goniatitida †
- Order Intejocerida †
- Order Lytoceratida †
- Order Meekoceratida †
- Order Mixosiphonata †
- Order Myopsida
- Order Nautilida
- Order Nautiloidea (awaiting allocation)
- Order Nautiloidea incertae sedis
- Order Octobrachia †
- Order Octopoda
- Family Alloposidae Verrill, 1881
- Family Amphitretidae Hoyle, 1886
- Family Argonautidae Tryon, 1879
- Family Bathypolypodidae Robson, 1929
- Family Bolitaenidae Chun, 1911
- Family Cirroctopodida (awaiting allocation)
- Family Cirroctopodidae Collins & Villenueva, 2006
- Family Cirroteuthidae Keferstein, 1866
- Family Eledonidae Rochebrune, 1884
- Family Enteroctopodidae Strugnell, Norman, Vecchione, Guzik & Allcock, 2014
- Family Grimpoteuthidae O'Shea, 1999
- Family Grimpoteuthididae accepted as Grimpoteuthidae O'Shea, 1999
- Family Idioctopodidae Taki, 1962
- Family Laemoteuthidae
- Family Laetmoteuthidae
- Family Luteuthidae O'Shea, 1999 accepted as Grimpoteuthidae O'Shea, 1999
- Family Luteuthididae accepted as Grimpoteuthidae O'Shea, 1999
- Family Megaleledonidae Taki, 1961
- Genus Adelieledone Allcock, Hochberg, Rodhouse & Thorpe, 2003
- Genus Bathypurpurata Vecchione, Allcock & Piatkowski, 2005
- Genus Bentheledone Robson, 1932
- Genus Graneledone Joubin, 1918
- Genus Megaleledone Iw. Taki, 1961
- Genus Microeledone Norman, Hochberg & Boucher-Rodoni, 2004
- Genus Pareledone Robson, 1932
- Genus Praealtus Allcock, Collins, Piatkowski & Vecchione, 2004
- Genus Tetracheledone Voss, 1955
- Genus Thaumeledone Robson, 1930
- Genus Velodona Chun, 1915
- Genus Vosseledone Palacio, 1978
- Family Octopoda (awaiting allocation)
- Family Octopodidae d'Orbigny, 1839
- Family Ocythoidae Gray, 1849
- Family Opisthoteuthidae Verrill, 1896
- Family Opistoteuthidae Verrill, 1896 accepted as Opisthoteuthidae Verrill, 1896
- Family Palaeoctopodidae Dallo, 1912 †
- Family Patelloctopodidae Fuchs & Schweigert, 2018 †
- Family Stauroteuthidae Grimpe, 1916
- Family Tremoctopodidae
- Family Vitreledonellidae Robson, 1932
- Genus Bolcaoctopus Mironenko, Giusberti, Serafini, Zorzin & Bannikov, 2024 †
- Order Oncocerida †
- Order Orthocerida †
- Order Otoceratida †
- Order Pallioceratida †
- Order Phragmoteuthida †
- Order Phylloceratida †
- Order Plectonocerida
- Order Plectronocerida † accepted as Ellesmerocerida †
- Order Prolecanitida †
- Order Protactinocerida †
- Order Pseudorthocerida †
- Order Psiloceratida †
- Order Sepiida
- Order Sepioidea
- Order Spirulida
- Order Tarphycerida †
- Order Teuthida
- Order Teuthoidea
- Order Vampyromorpha
- Order Xenodiscida †
- Order Yanhecerida †
- Class Cricoconarida †
- Class Gastropoda
- 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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