Ankle Evidence Shows Earth’s Earliest Primates Were Tree-Dwellers
If you went back to visit your earliest known primate ancestors, you’d find them in the trees. New fossil evidence shows Purgatorius, a small, squirrel-like insect and fruit-eating mammal, was a tree-dweller. Paleontologists analyzed 65 million-year-old fossil ankle bones found in Northeastern Montana to clear up questions about the habitat