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 continent, while giant beavers plied its lakes and ponds. Immense ground sloths weighing over 1,000 kg were found across many regions east of the Rocky Mountains. 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 continent, while giant beavers plied its lakes and ponds. Immense ground sloths weighing over 1,000 kg were found across many regions east of the Rocky Mountains. Evolution Paleontology & Fossils Phys.org – latest science and technology news stories