A paleontologist was trying to locate the site of a famous 1908 discovery when a rancher in Wyoming shared an important clue.

(CNN) — Scientists have recovered ancient proteins from a fossilized rhinoceros tooth, breaking new ground in the study of ancient life on Earth. The 24 million-year-old tooth, which was unearthed in ...

Researchers have described proteins that they say are among the most ancient ever sequenced. Two teams, which analysed molecules from extinct relatives of rhinos and other large mammals, have pushed ...

Rhinos’ evolutionary relationships became a little clearer with the sequencing of the oldest proteins yet. Researchers have described proteins that they say are among the most ancient ever sequenced.