A team of geologists at the University of Texas suggests that a collection of smooth, red quartzite cobbles, found in the Morrison Formation of Wyoming, was deposited there by dinosaurs coming from ...

Rainbow country : an introduction to Morrison Formation geology -- Vertebrates and the Jurassic world -- The Morrison vertebrates come to light -- The picture fills in -- Fins, scales, and wings : the ...

A headless Haplocanthosaurus, laid out at the Utah Field House of Natural History. Photo by the author The Morrison Formation is one of the most wonderful slices of prehistoric time found anywhere in ...

Stratal geometries, cyclical stacking patterns, and taphonomic analysis of the Aaron Scott Quarry in the Jurassic Morrison Formation indicate that sediments accumulated within a prograding ...

Tooth-marked bones provide invaluable insights into the feeding behaviors of long-extinct carnivorous creatures. While it is commonly thought that the giant tyrannosaurs were the primary culprits ...

The tooth-marked bones of giant, plant-eating dinosaurs have provided a fascinating glimpse into the prehistoric feeding habits of large carnivores living in North America around 150 million years ago ...

The Morrison Formation is a fossil wonderland. Inside these layers of multi-colored sedimentary stone, the remains of Allosaurus, Stegosaurus, Apatosaurus and more have been found through more than a ...

The climate 150 million years ago of a large swath of the western United States was more complex than previously known, according to new research from Southern Methodist University, Dallas. It's been ...

A cat-sized dinosaur, Enigmacursor mollyborthwickae, unearthed in Colorado, is revolutionizing our understanding of small Jurassic herbivores. This swift runner, now in London, provides crucial ...