Clues to mysterious disappearance of North America's large mammals 50,000 years ago found within ancient bone collagen - Phys.org
phys.orgSubmitted by physorg8953 in science
50,000 years ago, North America was ruled by megafauna. Lumbering mammoths roamed the tundra, while forests were home to towering mastodons, fierce saber-toothed tigers and enormous wolves. Bison and extraordinarily tall camels moved in herds across the conti…