The Nanotyrannus's small skull has been the source of debate among dinosaur experts for at least four decades, according to ...

An argument over whether fossils from several small dinosaurs represent a juvenile Tyrannosaurus rex or smaller adults of a ...

Small, fast new dinosaur species, Enigmacursor mollyborthwickae, shows that small, fast herbivores likely played vital ...

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

Scientists have unveiled Enigmacursor mollyborthwickae, a small, fast-moving dinosaur that once roamed the floodplains of Colorado during the Late Jurassic period. Measuring about three feet long, the ...

The new species is called Nanotyrannus. Compared to the well known tyrannosaurus rex, a nanotyrannus was more speedy and ...

Fossils paleontologists initially thought belonged to a juvenile Tyrannosaurus rex actually belong to a new species of ...

A new analysis of a controversial tyrannosaur fossil reveals the dinosaur wasn't a teenage version of T. rex as once thought, ...

London (CNN) — Scientists have discovered a new species of dinosaur — one that was dog-sized and roamed what is now the United States around 150 million years ago alongside familiar dinosaurs like ...

A dinosaur fossil discovery by a researcher from The University of Texas at El Paso may expand the known range of a species ...

Now, a research team says new evidence resolves the case. The latest clue comes from a complete skeleton — first uncovered in ...

A new study describes Wudingloong wui, an early long-necked dinosaur found in Yunnan, China. It is the oldest known member of its group in East Asia, dating to about 200 million years ago.