The pelycosaur group died out at the end of the Permian, but another group of synapsids, the cynodonts, went on to give rise to the mammals eventually. (sciencedaily.com)
The pelycosaurs were smallish to large (up to 3 meters or more) primitive Late Paleozoic synapsid reptiles. (sciencedaily.com)
With the aid of photogrammetry and computer imaging techniques, the scientists produced a 3D database for skeletons of dinosaurs, reptiles, birds, mammals and fossil synapsids (mammal - like reptiles). (sciencedaily.com)