Therapsids, the ancient relatives of mammals, once roamed Earth in great numbers during the middle to late Permian period. These land-dwelling creatures would later evolve into mammals, but their ...

Before dinosaurs walked the Earth and tens of millions of years before the first mammals appeared, distant mammal relatives with long, serrated canine teeth were the dominant carnivores on land.

When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: Illustration © Henry Sutherland Sharpe. Scientists ...

Guillette, L. J., J. and Hotton, Nicholas, III. 1986. "The Evolution of Mammalian Reproductive Characteristics in Therapsid Reptiles." In The Ecology and Biology of ...

Papers from a conference held at the Laboratory of Brain Evolution and behavior and at the National Museum of American History, Smithsonian Institution, 1981. Neurobehavioral significance of the ...