O. C. Marsh, of Yale College, announced the discovery of a new order of Mammalia, the Dinocerata, huge elephantine forms, with three pairs of horns and large canine teeth, from the Eocene deposits ...

Sabre-toothed predators -- best know from the infamous Smilodon -- evolved multiple times across different mammal groups. A new study reveals why: these teeth were 'functionally optimal' and ...

Cast your mind back 56 million years. Can’t? Allow us to refresh your memory: it was the Paleocene-Eocene Thermal Maximum, a ...

Caption Rugosodon is the earliest-known fossil skeleton of the multituberculate mammals, a major lineage of extinct mammals from the Jurassic to the Eocene. The skeletal features suggest that it ...

During the Eocene Epoch ... Due to their large size, any other animal that would hunt and kill a gomphothere would need to be ...

The findings help explain why sabre-teeth evolved so many times (at least five independent times in mammals) and also provides a possible explanation for their eventual demise. Their increasing ...