Thankfully, Colorado preserves it well, and this is where a team of scientists retrieved fossil evidence of a Late Cretaceous ...

A heard of Triceratops horridus walking through a Cretaceous swamp. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing ...

Rare fossils uncovered in Colorado show an unexpected swamp-dwelling creature lived ... “surprisingly large for mammals in the Late Cretaceous,” researchers said. Before an asteroid killed ...