The jaws of cynodonts resemble modern mammal jaws. It is very likely that this group of animals contains a species which is the direct ancestor of all modern mammals - Timeline of human evolution - Wikipedia, the free encyclopedia
Dinodontosaurus by ~DiBgd. One of the largest dicynodont therapsids. Despite the saurus in its name, it was closer to a mammal than a reptile. It was one of the few dicynodonts to survive the Permian extinction.