bipedal

(Newser) - The Komodo dragon is the only known creature on the planet today to boast teeth that are serrated, like a jagged-edged steak knife. But now researchers have discovered that the mighty T. rex not only sported serrated teeth, but also secret folds hidden toward the bottom of those teeth that...

(Newser) - An ancient whale with a bad sense of direction is helping researchers figure out when the landscape of Africa changed in a way that drove the evolution of humans. The beaked whale in question apparently took a wrong turn into a river and swam into modern-day Kenya about 17 million...

(Newser) - It isn't just recently that humans have hunted animals to extinction. It appears that 100,000 years ago a giant kangaroo lived in the Australian Outback, where it walked instead of hopped. But perhaps due to its slowness, the creature was an easy target for hunters who arrived somewhere...