The Dinosaur National Monument, which is located on the border between Colorado and Utah, was last excavated in 1924.
Fossilized bones and teeth dating to 773,000 years ago are providing a deeper understanding of the emergence of Homo sapiens.
New fossil evidence from China suggests that some of our vertebrate ancestors had four eyes. The study, published in Nature, ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results