Colorado paleontologists found a rare fossil mammal, Heleocola piceanus, from 70-75 million years ago. The discovery shows some ancient mammals were larger than previously thought. A team of paleontologists near Rangely,

Rare fossils uncovered in Colorado show an unexpected swamp-dwelling creature lived among the dinosaurs millions of years ago. A team of paleontologists uncovered the “new (or, more accurately, very old)” fossils near Rangely,

A new species of fossil mammal about the size of a muskrat, which was found in Colorado, lived during the age of dinosaurs.

The animal lived about 70 million to 75 million years ago in a part of the state that would likely have been a swampy environment.

The mammal fossil was found near Rangely and is from the Cretaceous period, meaning it was around when dinosaurs were roaming the earth. The mammal was a swamp-dwelling creature a