Taking advantage of fossils exposed by miners, an evolutionary biologist probes the adaptations of ancient mammals. (science.sciencemag.org)
Believed to be roughly the size of a dachshund, Ichibengops lived around 255 million years ago, and was a member of Therocephalia, a group of ancient mammal relatives that survived the largest mass extinction in history (the Permian - Triassic extinction). (sciencedaily.com)
The distribution of a virus studied among ancient mammals suggests the viruses spread to every continent except Antarctica and Australia, and that they jumped from one species to another more than 20 times. (sciencedaily.com)