Edmontosaurus annectens, a large herbivore duck-billed dinosaur that lived toward the end of the Cretaceous period, was ...

A fragment of upper jaw fossil from the Early Cretaceous is among the oldest examples of a toothless amphibian in the fossil record Chihiro Kai The arid valleys of Wyoming’s Cloverly Formation are ...

When it comes to studying dinosaurs, it's not always an easy task, but a random discovery in West Texas has changed our ...

Joe Kchodl, popularly known as “PaleoJoe,” recently returned from a summer trip to Wyoming, where he went “fishing” with his adult daughter Jen, who's known as “PaleoJen.” Although the 50-million-year ...

A brand new species of ancient snake has been discovered in western Wyoming. Four specimens of the ancient species were found huddled together, revealing the secrets of the social lives of ...

One of the world's best-preserved specimens of Archaeopteryx - the earliest-known birdlike animal - is headed for a small, privately owned museum in Thermopolis. The Wyoming Dinosaur Center has ...

Ancient lakes The fossils were found in a portion of what’s known as the Green River Formation — “one of the largest documented accumulations of (lake) sedimentary rock in the world,” according to a ...