Cretaceous Period

A Cretaceous mantis fossil is helping scientists piece together how these insects evolved their prey-nabbing adaptations.

The body of a tiny chick in a piece of Burmese amber from the Cretaceous period was preserved in incredible detail.

Scientists recently found the most complete fossil to date of a type of bird from the Cretaceous, trapped in a piece of amber.

A newly identified, 130-million-year-old marine reptile was enormous, measuring the length of nearly three grand pianos lined up, but it wasn't a top marine predator, a new study finds.

Tyrannosaurus rex could gnash and chomp its teeth together with such force that it could easily pulverize the bones of its prey, a new study finds.

In 1992, a Chinese farmer discovered an extraordinary fossil: the embryo of a rare and giant bird-like dinosaur that lived 90 million years ago.

A 145-million-year-old dinosaur about the size of a wild turkey sported a plume of tail feathers that were surprisingly modern-looking and aerodynamic in shape, a new study finds.

Scientists recently found tiny beetles resembling horseshoe crabs trapped in amber dating back 99 million years.