Dinosaur fossil

The Popular, Lucrative, and Legally Questionable Fossil Trade

Middlemen sell fossils to the highest bidder, whether it’s a museum or a wealthy collector who wants their own stegosaurus.
A colorful map measures gravity anomalies around the Chicxulub crater

How We Know What Killed the Dinosaurs

How do we know that a meteor caused the extinction of the dinosaurs?
Iguanodons, Megalosaurus and Heliosaurus

Dinosaur Brains And Other Unusual Fossil Finds

How can anything besides bones remain from so many millions of years ago?
Tyrannosaurus rex skeleton (the specimen AMNH 5027) at American Museum of Natural History.

An Asteroid Killed the Dinosaurs. Right?

What killed the dinosaurs? An asteroid wiped them out, right? New research suggests that even before that cataclysm, dinosaurs weren't doing so well.
Antique illustration of northern crested newt (Triturus cristatus)

The Age of Amphibians

Tracing the remarkable diversity of the early amphibians, creatures that spanned the globe and preceded the age of dinosaurs.
Apatosaurus

Could the Apatosaurus’ Tail Break the Sound Barrier?

Research suggests that the apatosaurus' tail was an impressive appendage.
Fossilized dinosaur eggs

The Color of Dinosaur Eggs

What color were dinosaur eggs? Looking at their closest cousins, birds, may give us a clue.
Illustrated Stegosaurus

Sex and the Stegosaurus

How do you sex a Stegosaurus? Look at its back plates.
Brontosaurus

Brontosaurus is Back, Baby!

The mighty brontosaurus might be real after all, according to new analysis.
Winged-arm and raptor legs are imagined on the hypothetical illustration of a Deinocheirus

Deinocheirus: At Long Last, Arms with a Body to Match

The mysterious Deinocheirus dinosaur now has a body.