(See a list of all 35 vanished genera of North American Ice Age mammals.) But some skeptics ... It's one thing to find a campsite with some animal bones in it, he says, quite another to find ...

Around 50,000 years ago, North America was home to a diverse array of megafauna. Mammoths roamed the tundra, while towering ...

"An animal's shape may be heavily affected by ... and dozens of other large Ice Age mammals all vanished by about 11,000 years ago. Many scientists cite climate change. Others say it was humans ...

Roughly half a million years ago, a group of armadillo-like mammals, horses, and sloths met their end in a sinkhole in what ...

A wide range of late Ice Age mammals inhabited the world ... Giant lions, sabertoothed cats, and huge bears fed on these large prey animals. People lived in many parts of the Old World by then ...

Our research will test current hypotheses to explain body size variation in ice-age mammals, including: Temperature: Large animals are better adapted to cold periods as they conserve heat more ...