Liste des espèces connues de thérapsides
https://en.wikipedia.org/wiki/List_of_therapsids
Steppesaurus
Steppesaurus is an extinct genus of basal Eupelycosauria belonging to the Sphenacodontidae, related to Dimetrodon and Sphenacodon, from the Late Permian San Angelo Formation of Texas.
Nitosaurus
https://en.wikipedia.org/wiki/Nitosaurus
Age range: 303.4 to 295.0 Ma
Distribution: found only at El Cobre Canyon (Cutler Formation) (of New Mexico)
Sphenacodon
https://en.wikipedia.org/wiki/Sphenacodon
Sphenacodon (meaning "wedge point tooth") is an extinct genus of synapsid that lived from about 300 to about 280 million years ago (Ma) during the Late Carboniferous and Early Permian periods. Like the closely related Dimetrodon, Sphenacodon was a carnivorous member of the Eupelycosauria family Sphenacodontidae. However, Sphenacodon had a low crest along its back, formed from blade-like bones on its vertebrae (neural spines) instead of the tall dorsal sail found in Dimetrodon. Fossils of Sphenacodon are known from New Mexico and the Utah–Arizona border region in North America.
Captorhinus
https://en.wikipedia.org/wiki/Captorhinus
Captorhinus is an extinct genus of captorhinid reptiles that lived during the Permian period (~280–270.6 Ma). Its remains are known from Oklahoma, Texas, Europe, India, Brazil and Zambia.
Mastersonia
https://en.wikipedia.org/wiki/Mastersonia
Temporal range: 279.5–268 Ma
Mastersonia is an extinct genus of non-mammalian therapsids from the Lower Permian of San Angelo Formation, Texas.
Knoxosaurus
https://en.wikipedia.org/wiki/Knoxosaurus
Knoxosaurus is an extinct genus of non-mammalian synapsids containing the species Knoxosaurus niteckii that existed approximately 279.5 to 268 million years ago.[1] It was named by American paleontologist Everett C. Olson in 1962 on the basis of fragmentary fossils from Middle Permian-age deposits in the San Angelo Formation of Texas in the United States.
Gorgodon
https://en.wikipedia.org/wiki/Gorgodon
Gorgodon is an extinct genus of basal synapsids. The genus is monotypic, known only from the type species Gorgodon minutus from the Early Permian of the southwestern United States. The only known remains of Gorgodon are two fossils consisting of fragments of the skull.
Age range: 279.5 to 268.0 Ma
Distribution: found only at Locality KAC (Lower Flowerpot Shale) (Permian of Texas)
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