The prehistoric predator is known from 280-270 ... the first saber-toothed animal on our planet—although there is some uncertainty regarding the age. "The age uncertainty makes it a little ...

Here are just a few groups of ancient animals that live on: And, here are the animals that get my vote for “most prehistoric-looking.” They may not be the oldest animals on Earth, but they ...

About 250 million years ago, at the end of the Permian period, something killed some 90 percent of the planet's species. Less than 5 percent of the animal species in the seas survived. On land ...