Roughly 100 million years ago, amorous male dinosaurs congregated in what is now Colorado to strut their stuff in hopes of impressing potential mates. That’s the scene paleontologists now say played ...

Dinosaurs liked it rough — and the fossils they left behind prove it. Top paleontologists have discovered that mating between some species of prehistoric behemoths was so violent that they literally ...

Researchers have discovered evidence of one of the largest dinosaur mating "dance arenas" in present-day Colorado. Previous studies have identified a couple of "dinosaur lek" areas -- where male ...

(CNN) — Paleontologists have long wrestled with how to differentiate between male and female dinosaurs based on their fossils. But new research may bring scientists closer to identifying the sex of ...

The grooves were likely made by male meat-eating theropod dinosaurs, said Martin Lockley of the University of Colorado Denver, CBC News reports. These dinosaurs appeared to have gathered in groups and ...