SIOUX FALLS, S.D. — Tyrannosaurus rex may have been known as the big guy around the Hell Creek Formation 66 million years ago, but a newly discovered species of raptor would have roamed the region as ...

A young scientist has described his astonishment at discovering a whole new species of dinosaur dubbed a “chicken from hell”. The discovery was made from fossils earlier thought to be of a juvenile ...

Scientists have discovered the fossils of two new species of sturgeon fish in the Hell Creek Formation of North Dakota that were likely buried when the dinosaur-ending Chicxulub asteroid hit Earth.

Artist’s depiction of Eoneophron infernalis (top left), MOR 752 (bottom left), and Anzu wyliei (right) in the Hell Creek Formation. Illustration by Zubin Erik Dutta. Funding: Funding for histology ...

In a remarkable discovery, three school kids uncovered a rare juvenile Tyrannosaurus rex fossil while hiking in North Dakota, sparking significant interest in the paleontological community. This ...

Paleontologists have identified a previously unknown species of dinosaur that lived in North America just before the mass extinction event around 66 million years ago. This catastrophic event wiped ...

Dinosaurs’ eating habits and, later, their extinction may have altered the course of rivers in ancient North America, according to a new paper published in Communications Earth and Environment.

SIOUX CITY -- Tail and femur bones of the ostrich-like Struthiomimus, a frill from a Triceratops and the complete upper skull of a new dragonesque-dinosaur species are among the rare fossils visitors ...

The three fossil specimens (from left to right), Avisaurus darwini, Avisaurus sp., and Magnusavis ekalakaensis, all of which are represented by a tarsometatarsus. They are all shown to scale with one ...

Scientists are studying two dinosaurs found buried together in prehistoric battle. The North Carolina Museum of Natural Sciences is preparing to study a fossil it has held for years — a pair of ...