BOZEMAN, Mont. – A significant area of Cretaceous rock exposures in northwest Montana has been recognized as an International Geoheritage Site, Montana State University announced on Thursday.

But there is “good news,” Montana Fish, Wildlife & Parks - Region ... The fossil dates back to the late Cretaceous period, officials said. Though its removal from the park may come as ...

Portrait reconstructions of all four centrosaurine dinosaurs that lived together in the Kennedy Coulee Assemblage of northern Montana and southern Alberta ... earth about 78 million years ago in the ...

The Late Cretaceous modern (crown) bird,Vegavis iaai, pursuit diving for fish in the shallow ocean off the coast of the Antarctic peninsula, with ammonites and plesiosaurs forcompany. Sixty-six ...

Allosaurus was the most common large carnivore of the Late Jurassic in North America. It was a smaller predecessor of the Cretaceous Tyrannosaurus. Strong forelimbs with sharp claws, powerful hind ...

The Cretaceous is split into two smaller time periods called epochs. The Early Cretaceous Epoch lasted from 145 million years ago to 100.5 million years ago and the Late Cretaceous Epoch lasted from ...