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 ...

improving synapsid hearing. The incus, malleus and stapes of our inner ear are the remnants of these ancient jaw bones. By ...

It was followed by the Jurassic and Cretaceous periods – at ... including a group of animals called the synapsids, which would later evolve into mammals. One member of this group was a large ...