A 165-million-year-old fossil has revealed an extraordinary Jurassic predator that may help explain how mammals developed one ...

Add Yahoo as a preferred source to see more of our stories on Google. A rare fossil of Joaquinraptor casali from Patagonia reveals a powerful predator that may have dined on crocodiles. (CREDIT: The ...

A tiny 242-million-year-old fossil from Devon is shaking up scientists’ assumptions about the earliest members of the lizard lineage. Instead of the expected skull hinges and palate teeth typical of ...

Can a snake in Thailand influence the evolution of a snake in the Philippines even if the two species never cross paths? According to a new study, the answer may be yes. The research suggests that ...

Certain species of wasps and frogs share a pain and inflammation peptide similar to one found in vertebrates to help defend against predators—a discovery that contributes to a shifting view of how ...