“When Whales Walked the Earth” –Prehistoric 4-Legged Fossil Discovered




Once upon a time—in the Eocene epoch—whales were quadrupeds. They walked on land. The cetaceans, the group including whales and dolphins, originated in south Asia more than 50 million years ago from a small, four-legged, hoofed ancestor. Now, researchers reporting the discovery of an ancient four-legged whale—found in 42.6-million-year-old marine sediments along the coast of Peru—have new insight into whales’ evolution and their dispersal to other parts of the world.