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Therapsida - Wikipedia, the free encyclopedia |
 | | Therapsids became the dominant land animals during the Middle Permian, and consisted of three major clades, the dinocephalians, the herbivorous anomodonts, and the mostly carnivorous theriodonts, with the carnivorous biarmosuchians as a paraphyletic assemblage of primitive forms. |
 | | After a brief burst of evolutionary diversity, the dinocephalians died out in the later Middle Permian (Guadalupian), but the anomodont dicynodonts and the theriodont gorgonopsians and therocephalians flourished, and were joined at the very end of the Permian by the first cynodonts. |
 | | Like all land animals, the therapsids were seriously affected by the end Permian extinction event, with the very successful gorgonopsians dying out altogether, and the remaining groups being represented by only one or two families of a few species each surviving into the Triassic. |
| en.wikipedia.org /wiki/Therapsida (260 words) |
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