A chicken-sized dino, the oldest known in North America, has thrown a wrench in the widely accepted timeline of early ...

The state of Wyoming is home to some of the best and most diverse fossil specimens on the planet. Due to their high quality and scientific value, fossils from Wyoming have been relocated to museums ...

Study finds the oldest known North American dinosaur fossil in Wyoming, challenging previous beliefs about dinosaur evolution.

Dinosaurs inhabited the Northern Hemisphere millions of years earlier than scientists previously thought, according to the ...

A fragment of upper jaw fossil from the Early Cretaceous is among the oldest examples of a toothless amphibian in the fossil record ...

With gavel in hand, auctioneer Alexandre Giquello of the Binoche et Giquello auction house leads ... it was found in Wyoming. As if frozen in mid-swim, an Ichthyosaurus fossil lends a Jurassic ...

This discovery challenges the long-held belief that dinosaurs originated exclusively in the southern supercontinent, Gondwana.