Misplaced Pages

Dinodontosaurus Temporal range: Mid-Late Triassic ~242–235 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Mounted Dinodontosaurus skeleton
D. tener illustration
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Synapsida
Clade:	Therapsida
Suborder:	†Anomodontia
Clade:	†Dicynodontia
Clade:	†Kannemeyeriiformes
Genus:	†Dinodontosaurus Romer, 1943
Type species
†Dinodontosaurus oliveirai Romer, 1943
Species
D. brevirostris Cox, 1968 D. tener (Huene, 1935) D. turpior (Huene, 1935)
Synonyms
Genus synonymy Chanaria Cox, 1968 Diodontosaurus Tupí-Caldas, 1936 Species synonymy Synonyms of D. brevirostris: Chanaria platyceps Cox, 1968 D. platygnathus Cox, 1968 Synonyms of D. tener: Diodontosaurus pedroanum Tupí-Caldas, 1936 D. oliveirai Romer, 1943

Dinodontosaurus (meaning "terrible-toothed lizard") is a genus of dicynodont therapsid. It was medium to large dicynodont of the Triassic (with skull up to 40 centimetres (16 in) long) and had a beak corneum. It lived in the Middle Triassic but disappeared in the Upper Triassic.

Species

• Dinodontosaurus tener is the most common species of dicynodont that existed in the Middle Triassic, and more common in the fossil layers that age in Rio Grande do Sul, in Rota Paleontológica. They are found mainly in the Paleontological Site Chiniquá in São Pedro do Sul and Candelária, where a group of ten pups were found together, demonstrating that these animals had strategies for coexistence in a group and caring for their offspring. Diodontosaurus pedroanum Tupi-Caldas, 1936 and Dinodontosaurus oliveirai, Romer 1943 are synonyms.
• Dinodontosaurus brevirostris is known from remains found in Argentina. Chanaria platyceps Cox, 1968 and Dinodontosaurus platygnathus are synonyms.

Phylogeny

Dinodontosaurus in a cladogram from Szczygielski & Sulej (2023):

Gallery

• Skull (side)
• Skull (front)
• D. tener juveniles

References

1. ^ Kammerer, C. F.; Ordoñez, M. D. (2021). "Dicynodonts (Therapsida: Anomodontia) of South America". Journal of South American Earth Sciences. 108: 103171. Bibcode:2021JSAES.10803171K. doi:10.1016/j.jsames.2021.103171. S2CID 233565963.
2. Paleobiology Database.
3. Szczygielski, T.; Sulej, T. (2023). "Woznikella triradiata n. gen., n. sp. – a new kannemeyeriiform dicynodont from the Late Triassic of northern Pangea and the global distribution of Triassic dicynodonts". Comptes Rendus Palevol. 22 (16): 279–406. doi:10.5852/cr-palevol2023v22a16.

v t e Anomodontia
Kingdom: Animalia Phylum: Chordata Clade: Synapsida Clade: Therapsida Synapsida see Synapsida Anomodontia see below↓
Anomodontia Anomodontia Biseridens Novocynodon? Anomocephaloidea Anomocephalus Tiarajudens Venyukovioidea Otsheria Parasuminia Suminia Ulemica Venyukovia Chainosauria Galechirus Galeops Galepus Patranomodon Anomocephaloidea? Dicynodontia see below↓
Dicynodontia Dicynodontia Brachyprosopus Colobodectes Eodicynodon Lanthanostegus Nyaphulia Pristerodon Pylaecephalidae Diictodon Eosimops Prosictodon Robertia Endothiodontia Abajudon Endothiodon Niassodon Therochelonia Emydopoidea Digalodon Emydorhinus? Palemydops? Emydopidae Compsodon Emydops Myosauridae Myosauroides Myosaurus Kingoriidae Dicynodontoides Kombuisia Thliptosaurus Cistecephalidae Cistecephaloides Cistecephalus Kawingasaurus Kembawacela Sauroscaptor Bidentalia see below↓
Bidentalia Bidentalia Daqingshanodon Idelesaurus Keyseria Odontocyclops Rastodon Syops Elphidae Elph Interpresosaurus Katumbia Geikiidae Aulacephalodon Bulbasaurus Geikia Pelanomodon Oudenodontidae Australobarbarus Oudenodon Tropidostoma Rhachiocephalidae Kitchinganomodon Rhachiocephalus Dicynodontoidea Counillonia Daptocephalus Delectosaurus Dicynodon Dinanomodon Gordonia Kunpania Peramodon Repelinosaurus Taoheodon Turfanodon Vivaxosaurus Lystrosauridae Basilodon? Euptychognathus? Jimusaria? Kwazulusaurus Lystrosaurus Sintocephalus? Kannemeyeriiformes see below↓
Kannemeyeriiformes Kannemeyeriiformes Angonisaurus Dinodontosaurus Elephantosaurus Woznikella Shansiodontidae Shansiodon Tetragonias Vinceria Rhinodicynodon Kannemeyeriidae Acratophorus Dolichuranus Kannemeyeria Parakannemeyeria Rabidosaurus Rechnisaurus Rhadiodromus Shaanbeikannemeyeria Sinokannemeyeria Uralokannemeyeria Wadiasaurus Xiyukannemeyeria Stahleckeriidae Sungeodon Placeriinae Argodicynodon Lisowicia Moghreberia Pentasaurus Placerias Zambiasaurus Stahleckeriinae Eubrachiosaurus Ischigualastia Jachaleria Sangusaurus Stahleckeria Ufudocyclops
Other articles Nomina dubia Azarifeneria Baiopsis Calleonasus Chelyoposaurus Cristonasus Diaelurodon Dicranozygoma Elatosaurus Eurycarpus Haughtoniana Keirognathus Koupia Nasoplanites Opisthoctenodon Parvobestiola Planitorostris Platypodosaurus Putillosaurus Taognathus Paraphyletic groups Cryptodontia? Dromasauria

• Anomodont genera
• Kannemeyeriiformes
• Middle Triassic synapsids of South America
• Middle Triassic first appearances
• Late Triassic extinctions
• Late Triassic synapsids of South America
• Triassic Argentina
• Fossils of Argentina
• Paraná Basin
• Santa Maria Formation
• Triassic Brazil
• Fossils of Brazil
• Fossil taxa described in 1943
• Taxa named by Alfred Romer