"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 ...

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

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 ...

Research has dated fossils in the Bisti/De-Na-Zin Wilderness as being from the time leading up to the asteroid hitting.

Fireworks were blasted off after every touchdown the Hot Springs High School football team scored in last week’s regular ...

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 ...

A new study is challenging a long-standing view of the final days of the dinosaurs. For decades, many palaeontologists ...

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