Mammoths (Mammuthus) are prehistoric beasts that roamed tundra ecosystems during the last ice age (2.6 million to 11,700 years ago), but their evolutionary history goes back farther than that.

Known as the Younger Dryas, this partial return to ice-age conditions may have stressed ... species boundaries and wiped out all the big beasts. "[MacPhee's hyphothesis] doesn't even have ...

Nevertheless, the short-faced bear would have been a towering, frightening beast. Although the bears in ice age North America were the biggest and most powerful carnivores, they had some stiff ...