For nearly two decades, paleontologists thought they had Dunkleosteus terrelli figured out. This monstrous, 30-foot fish ruled Late Devonian oceans 360 million years ago. Scientists believed it used ...

Add Yahoo as a preferred source to see more of our stories on Google. Newly described muscle anatomy (right) and overall jaw anatomy of Dunkleosteus terrelli (center), compared to a more typical ...

There are plenty of contemporary creatures that inspire fear. For example, the northern green anaconda is the heaviest snake in the world and weighs more than a football player. Should you encounter ...

Popular Science: Russell Engelman, graduate student in biology at the College of Arts and Sciences, collaborated with an international team of researchers from Australia, the United Kingdom and Russia ...