A tyrannosaur that lived 70 million years ago in Alaska wasn't nearly as big as Tyrannosaurus rex, but it wasn't as small as ...

Evidence showed that dinosaurs originated in the southern part (Gondwana) of the supercontinent and headed to the northern half (Laurasia) over millions of years, before the infamous asteroid ...

Lovelace and his colleagues performed high-precision radioisotopic dating of rocks in the formation that held Ahvaytum's fossils, which revealed that the dinosaur was present in the northern ...

A study on fossils found in Alaska supports the theory that a plant-eating dinosaur species in Hokkaido ... that adapted to the environment at the northern limit of the species’ habitat crossed ...

The find also suggests that dinosaurs roamed the northern hemisphere several million years earlier than previously thought. An artist’s illustration shows how Ahvaytum bahndooiveche may have ...

Its discovery has shocked paleontologists, who previously assumed that no dinosaurs existed in the Northern Hemisphere at this time. Partial remains from multiple individuals of the new species ...

Lovelace and graduate student Aaron Kufner's just-published research contends dinosaurs inhabited the northern hemisphere millions of years earlier than thought, and around the same time as they ...