A recent discovery of a 380-million-year-old heart left researchers in awe, but it is quite the deal when it comes to evolutionary history. The 380-million-year-old heart, the oldest ever found, coupled with a separate fossilized liver, stomach, and intestine (can ...

It has been hypothesized that teeth developed from exterior scales or that they were already present in the mouth at the time of their evolution. More support for the outside-in theory was discovered by researchers investigating a fossil of the ...

Incredible bones of a large marine lizard have been discovered, providing insight into the dominance of this extinct creature 66 million years ago. The creature is a newly found genus of mosasaur, huge marine reptiles that roamed the seas during ...

A new species of dinosaurs has been found in Argentina by paleontologists; it resembles a Tyrannosaurus rex in many respects, including having a large head and short limbs. If there is one thing that the Tyrannosaurus rex is famous for, ...

An American mastodon inhabited what is now the Midwest more than 13,000 years ago. Every year, he went to the same location in northeast Indiana, which is thought to be a breeding habitat for these birds. In combat, he was ...

A gigantic dinosaur with the face of a crocodile was found on the Isle of Wight by one of the top fossil hunters in Britain. According to experts speaking on Thursday, this dinosaur was likely the biggest predator that ever ...