Long thought extinct, sebecid fossils found in the Dominican Republic are rewriting what we know about ancient predators in ...

Giant ‘sea monster’ fossil unearthed in Mississippi mud - Mosasaurs were apex predators, and at their largest, they could ...

Imagine a crocodile built like a greyhound—that's a sebecid. Standing tall, with some species reaching 20 feet in length, ...

You wouldn't have been able to predict this looking at the modern ecosystem," said paper author and vertebrate paleontologist Jonathan Bloch.

After the demise of the dinosaurs following an asteroid strike 66 million years ago, mammals became Earth's dominant land ...

Researchers uncovered one vertebra, and based on its size, they estimate the massive creature was at least 30 feet long when ...

In Big Bend National Park in Texas, geology students uncovered a rare fossil belonging to one of North America's largest ...