Bone by bone and study by study, palaeontologists are learning more than ever before about dinosaurs. But there are still many aspects of prehistoric biology that we know little about. In fact, some of the simplest facets of dinosaur lives remain elusive, like how...

Mei Long was a tiny, early Cretaceous, a feathery troodontid dinosaur with big eyes and a little switchblade claw on each foot.

The foot-long dinosaur rested its head over its folded arms, and its tail wrapped around the dinosaur’s torso. Mei died sleeping in a roosting position similar to...

Another Mei specimen has confirmed that the first find was not a fluke. Palaeontologists have described a second, slightly smaller Mei that was preserved in a nearly identical sleeping position. Much like the first, this Mei probably died in a prehistoric ashfall that b...