The two oldest-known fossil skeletons of bats, unearthed in southwestern Wyoming and dating to at least 52 million years ago, are providing insight into the early evolution of these flying mammals - today represented by more than 1,400 species. "This bat was not much different than the insectivorous bats flying around today," said paleontologist Tim Rietbergen of the Naturalis Biodiversity …
A dramatic change in climate that occurred about 30 million years ago resulted in a mass extinction in Africa and the Arabian Peninsula that is just now being documented by the scientific community. A team of international scientists analyzed a large collection of fossils from five mammal groups that once roamed those regions, revealing that 63 percent of the species …
