Scientists uncovered evidence that human blood cells may trace their origins back to single-celled ancestors that lived 700 ...

Poposaurus comes from a group of extinct relatives of the crocodile known as Poposauroidea. Crocodiles and birds share an evolutionary heritage with dinosaurs and pterosaurs, despite there being ...

A new genome-based study suggests that ancient sharks like frilled and cow sharks could sit outside the family tree that ...

Birds are the only dinosaur lineage that survived until today. About 66 million years ago at the Cretaceous–Paleogene (K–Pg) boundary, a mass extinction event destroyed all non-avian dinosaurs, ...

Just as bird watchers may use binoculars to add to their species lists, scientists interested in bird evolution may use computational tools to clarify avian lineages. Indeed, such tools have enabled ...

Our species is the last living member of the human family tree. But just 40,000 years ago, Neanderthals walked the Earth, and hundreds of thousands of years before then, our ancestors overlapped with ...