Teeth reveal that Canadian dinosaurs knew how to share

Dinosaur teeth have been studied many times already. Scratches and pits on the surface of herbivore teeth provide clues to how they fed, and what types of plants they fed on. But many of these studies look at only a few teeth, or only a few specimens. Not so with this study. » 6/16/14 3:33pm 6/16/14 3:33pm

Big, 100-Million-Year-Old Bird Tracks Discovered in Australia

The oldest bird footprints ever discovered in Australia suggest there were birds – big ones – soaring over the continent as long ago as the Early Cretaceous Period. How do researchers know these birds were flying, and not just walking? Science! » 10/29/13 7:17am 10/29/13 7:17am

Barack Obama just had a prehistoric lizard named in his honor. Can you…

Creative taxonomy — it's what happens when scientists discover an as-yet unnamed species and find some way to connect it to a person, place, or thing. Sometimes that person/place/thing is famous. Sometimes it isn't. Sometimes the connections between the two make perfect sense. Other times the connections are more… » 1/02/13 3:30pm 1/02/13 3:30pm

Meet the two newest, tiniest horned dinosaurs

Two pint-sized relatives of the famous Triceratops have been discovered in Alberta, giving us our best understanding yet of how these horned dinosaurs expanded into North America. The best part? Neither was much more than a meter or so long. » 3/13/12 8:20am 3/13/12 8:20am

This giant fossil flea once feasted on dinosaurs

This fossil reveals a flea that is about twice as big as any known species alive today. It dates back about 165 million years, and its razor-sharp mouth likely evolved for one purpose: to pierce and feed on dinosaur hides. » 2/29/12 12:03pm 2/29/12 12:03pm

How did a heavily-armored dinosaur end up at the bottom of the ocean?

Although a few dinosaurs were adapted to live underwater, most dinosaurs were landlubbers through and through. And perhaps no dinosaur had less business going for a swim that this fellow, the heavily-armored, 13,000-pound Ankylosaurus. » 1/30/12 9:35am 1/30/12 9:35am

Carnotaurus had the most ridiculously powerful dinosaur tail ever

Here's a nice counterbalance for our previous report on Carnotaurus's wimpy arms - it turns out any shortcomings in its arms were more than made up for with its super-strong tail, which made it one of the fastest hunters around. » 10/16/11 11:15am 10/16/11 11:15am

Carnotaurus had the most ridiculously weak dinosaur arms ever

The image of the hulking T. rex and its comically undersized arms is deeply ingrained in pop culture, but it isn't really fair. They were muscular little appendages well-suited to their evolutionary purpose. The wimpy-armed Carnotaurus is another story entirely. » 9/25/11 11:30am 9/25/11 11:30am

Birds from the Cretaceous period went out the same way as the dinosaurs…

For years, paleontologists have disagreed over whether birds from the Cretaceous period went out with a whimper — dying out gradually over the course of millions of years — or with a bang — getting wiped out by the same mass extinction event that is believed to have killed off Earth's most recent (and final) wave of… » 9/19/11 2:00pm 9/19/11 2:00pm

Triceratops horn suggests a meteor really did kill off all the dinosaurs

We're almost certain that a giant meteor hit Earth 65 million years ago. But a mysterious "three-meter gap" in the fossil record might mean dinosaurs were already dying off. Now a newly discovered fossil might finally reveal the whole story. » 7/13/11 11:00am 7/13/11 11:00am

The world's tiniest dinosaur was less than two feet long

A tiny neck bone fossil measuring just a quarter-inch long was recently discovered in southern England. Dating back between 145 and 100 million years ago, the dinosaur that this bone belonged to can't have been more than 20 inches long. » 6/14/11 3:05pm 6/14/11 3:05pm