An analysis suggests Nanotyrannus is a separate, smaller dinosaur that lived alongside T. rex, settling a 30-year debate ...

What if everything we know about T. rex growth is wrong? A complete tyrannosaur skeleton has just ended one of paleontology's ...

Researchers say they have uncovered a case of mistaken identity and found evidence of a species called Nanotyrannus lancensis ...

A new study of dinosaur biodiversity challenges the belief that the megafauna were on their way out 66 million years ago ...

The “dueling dinosaur” fossil still leaves more questions than answers as scientists now attempt to determine their causes of ...

Dinosaurs weren’t dying out before the asteroid hit—they were thriving in vibrant, diverse habitats across North America.

Fossils from New Mexico change how we look at dinosaur history.

A trove of specimens from New Mexico may help settle a long-running argument about the diversity of dinosaurs before their ...

Newly dated fossils from New Mexico challenge the idea that dinosaurs were in decline—and suggest instead they had formed ...

Spring is a time for budding flowers, tender green leaves and baby animals. But 66 million years ago, that gentle season ...

Of all the mysteries surrounding dinosaurs, none has sparked more debate than how their era ended—was it a gradual decline or ...

For decades, many scientists believed dinosaurs were already dwindling in number and variety long before an asteroid strike ...