This dinosaur was one of the earliest members of a famous, earth-shaking family.
Extinction can be hard to track, even for celebrity species.
Paleontologists provide a new look at a beautifully preserved fossil cephalopod
This strange marine reptile is represented by a truly exceptional skeleton
Giraffes have been long necks for much of their history
Ancient skulls hint at when today's spotted hyenas started to get smart.
This prehistoric fish boasted impressive fangs
Lions and hyenas have been antagonizing each other for thousands of years.
Stone tools and fossil feces place both humans and giant hyenas at a mammoth carcass in ice age Spain
This new dinosaur adds to the big picture of how the terrible lizards were faring at the end of the Cretaceous
Crushing jaws make spotted hyenas incredibly versatile carnivores
This unusual fossil pachyderm totally lacked upper tusks
A fossil skull from China represents one of the largerst saber-toothed carnivores of all time
This marine mammal's mouth was the perfect multi-tool for crunching shellfish
Early in the Age of Mammals, pangolins used to trundle around Wyoming
Some cats can purr. Others can't. Why?
A rare specimen shows a prehistoric chain of chowing down
Newly-discovered species of armored fish was a giant.
This fossil mammal strangely resembles a mythical creature from Down Under
An exceptional fossil raises questions about what non-avian dinosaurs sounded like.