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
- Subphylum Cephalochordata
- Subphylum Tunicata accepted as Urochordata
- Subphylum Urochordata
- Subphylum Vertebrata
- Superclass Tetrapoda
- Class Acanthodii †
- Class Actinopterygii
- Class Agnatha (awaiting allocation)
- Class Cephalaspidomorphi
- Class Chondrichthyes
- Class Conodonta †
- Order Belodellida †
- Order Conodonta (awaiting allocation) †
- Order Conodonta incertae sedis †
- Order Conodontophorida †
- Order Distacodontina †
- Order Hibbardellina †
- Order Ozarkodinida †
- Family Anchignathodontidae Clark, 1972 †
- Family Cavusgnathidae Austin & Rhodes, 1981 †
- Family Elictognathidae Austin & Rhodes, 1981 †
- Family Eognathodidae Bardashev, Weddige & Ziegler, 2002 †
- Family Eopolygnathidae Bardashev, Weddige & Ziegler, 2002 †
- Family Gnathodontidae Sweet, 1988 †
- Genus Gnathodus Pander, 1856 †
- Species Gnathodus bassleri (Harris & Hollingsworth, 1933) †
- Species Gnathodus roundyi (Gunnell, 1931) †
- Family Idiognathodontidae Harris & Hollingsworth, 1933 †
- Family Iowagnathidae Liu, Bergström, Witzke, Briggs, McKay & Ferretti, 2017 †
- Family Kockelellidae Klapper, 1981 †
- Family Mestognathidae Austin & Rhodes, 1981 †
- Family Palmatolepidae Sweet, 1988 †
- Family Palmatolepididae Sweet, 1988 † accepted as Palmatolepidae Sweet, 1988 †
- Family Polygnathidae Bassler, 1925 †
- Family Pseudopolygnathidae Lindström, 1970 † accepted as Polygnathidae Bassler, 1925 †
- Family Spathognathodontidae Hass, 1959 †
- Family Sweetognathidae Ritter, 1986 †
- Genus Appalachignathus Bergström, Carnes, Ethington, Votaw & Wigley, 1974 †
- Genus Bergstroemognathus Serpagli, 1975 †
- Genus Reutterodus Serpagli, 1975 †
- Order Panderodontida †
- Order Paraconodontida †
- Order Priodontina †
- Order Prioniodinida †
- Order Prioniodontida †
- Order Proconodontida †
- Order Protopanderodontida †
- Order Westergaardodinida † accepted as Paraconodontida †
- Class Dipnoi
- Class Dipnomorpha accepted as Dipnoi
- Class Galeaspida †
- Class Gnathostomata incertae sedis †
- Class Myxini
- Class Osteichthyes (awaiting allocation)
- Class Osteichthyes incertae sedis †
- Class Ostracodermi †
- Class Pisces (awaiting allocation)
- Class Placodermi †
- Class Pteraspidomorphi †
- Class Sarcopterygii
- Class Thelodonti †
- Genus Emmonsaspis Resser & Howell, 1938 †
- Genus Harajicadectes Choo, Holland, Clement, King, Challands, Young & Long, 2024 †
- Genus Kahamachli Malkani, 2019 †
- Genus Nuucichthys Lerosey-Aubril & Ortega-Hernández, 2024 †
- Genus Rhynchocopros Hunt, Lucas & Spielmann, 2013 †
- Genus Santamariacopros Hunt, Lucas & Spielmann, 2013 †
- Genus Squirmarius McCoy, Wittry, Sadabadi & Mayer, 2023 †
- Class Chordata (awaiting allocation)
- Class Eotetrapodiformes incertae sedis
- 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
- 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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