Scientists have shed new light on the rhino family tree after recovering a protein sequence from a fossilized tooth from more than 20 million years ago. The recovered protein sequences allowed ...

Proteins — biological building blocks encoded by the genome — are hardier than DNA and can push researchers’ abilities to use molecules to understand ancient species deeper into the past.

Ancient rhino tooth. Credit: University of York Scientists have shed new light on the rhino family tree after recovering a protein sequence from a fossilized tooth from more than 20 million years ago.