"52-Million-Year-Old Bat Skeletons Discovered in Wyoming Fossils"

Scientists have described a new species of bat based on the oldest bat skeletons ever recovered, which lived in Wyoming about 52 million years ago. The study supports the idea that bats diversified rapidly on multiple continents during this time. The fossils represent the oldest bat skeletons ever found and are not the most primitive, supporting the idea that Green River bats evolved separately from other Eocene bats around the world.