Fossil skull of the extinct cynodont therapsid Cynognathus crateronotus. Cynognathus was a powerful predator that was close to being a mammal, but not quite. It has been found in several parts of ...
Exhibit specimen of Edaphosaurus, a pelycosaur synapsid, from the collections at the Museum of Comparative Zoology. Pelycosaurs are the most ancient forerunners of mammals. This study shows that ...
Illustration of Dimetrodon, pelycosaur synapsid, showing the elaborate backbone sail. This study shows that despite their bizarre sails, it is likely that their vertebral movements were relatively ...
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