When Did The First Anthropoids Evolve
Undoubted anthropoids have been traced back to the Eocene period and are as old as 45 Ma (ref. The oldest well-known anthropoids (Parapithecidae and Oligopithecidae) come from the late Eocene of Egypt [about 37 million years ago (Ma)] (4, 5). The first true primates evolved by 55 million years ago…