Dinodontosaurus
Extinct genus of dicynodonts
title: "Dinodontosaurus" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["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"] description: "Extinct genus of dicynodonts" topic_path: "geography/argentina" source: "https://en.wikipedia.org/wiki/Dinodontosaurus" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0
::summary Extinct genus of dicynodonts ::
| fossil_range = Mid-Late Triassic ~ | image = Dinodontosaurus.jpg | image_caption = Mounted Dinodontosaurus skeleton | image2 = Dinodontosaurus1DB.jpg | image2_caption = D. tener illustration | taxon = Dinodontosaurus | authority = Romer, 1943 | type_species = Dinodontosaurus oliveirai | type_species_authority = Romer, 1943 [Junior synonym] | subdivision_ranks = Species | subdivision = * D. brevirostris Cox, 1968
- D. tener (Huene, 1935)
- D. turpior (Huene, 1935) [nomen dubium] | synonyms = {{collapsible list|bullets = true |title = Genus synonymy | Chanaria Cox, 1968 | Diodontosaurus Tupí-Caldas, 1936 [nomen suppressum] | 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 | synonyms_ref =
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 cm 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 skeleton remains and a coprolite animal latrine found in Argentina. Chanaria platyceps Cox, 1968 and Dinodontosaurus platygnathus are synonyms.
Phylogeny
Dinodontosaurus in a cladogram from Szczygielski & Sulej (2023): |label1=Kannemeyeriiformes |1={{clade |label1=Shansiodontidae |1={{clade |1=Rhinodicynodon |2={{clade |1=Tetragonias |2={{clade |1=Shansiodon |2=Vinceria |2={{clade |1=Dinodontosaurus |2={{clade |label1="Kannemeyeriidae" |1={{clade |1=Dolichuranus |2={{clade |1={{clade |1={{clade |1=Acratophorus |2={{clade |1=Rabidosaurus |2=Wadiasaurus |2={{clade |1=Sinokannemeyeria |2={{clade |1=Parakannemeyeria |2=Xiyukannemeyeria |2={{clade |1=Rhadiodromus |2={{clade |1=Shaanbeikannemeyeria |2={{clade |1=Kannemeyeria |2={{clade |1=Rechnisaurus |2=Uralokannemeyeria |2={{clade |1=Angonisaurus |2={{clade |1=Woznikella |2=Stahleckeriidae
Gallery
File:Dinodontosaurus skull.jpg|Skull (side) File:Dinodontosaurus skull 1.jpg|Skull (front) File:Dinodontosaurus museu2x.jpg|D. tener juveniles
References
References
- (2021). "Dicynodonts (Therapsida: Anomodontia) of South America". [[Journal of South American Earth Sciences]].
- [https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=178082 Paleobiology Database.]
- [https://www.bbc.co.uk/news/science-environment-25126333 "Giant prehistoric toilet unearthed"], James Morgan, science reporter, ''[[BBC News]]'', 28 November 2013
- (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.
::callout[type=info title="Wikipedia Source"] This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page. ::