"For the first time, we have a complete, detailed picture of a large dinosaur that we are really convinced of." ...

By working with the two mummies, the researchers were also able to determine that Edmontosaurus could likely grow over 40 ...

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

The Nanotyrannus's small skull has been the source of debate among dinosaur experts for at least four decades, according to the paper. Earlier research suggested it belonged to a young T. rex, but ...

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

Scientists reveal that a 66-million-year-old dinosaur ‘mummy’ was preserved by a clay mask, offering new insights into ...

T. rex's story has been turned on its head by a new discovery about one of the world's most famous fossil finds. One of the ...

Between the Sinks and the Rise of the Middle Fork of the Popo Agie, the river famously disappears into subterranean mystery.

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

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

A $6,400 bronze sculpture featuring bison by famous Wyoming artist Chris Navarro a placed in downtown Cheyenne in memory of a ...