Analysis of the fossil suggests that the only two egg-laying mammals, platypuses and land-based echidnas, both descended from ...

A new study suggests the platypus and echidna — the only egg-laying mammals — had a water-dwelling ancestor. The finding ...

We may have gotten the evolutionary origins of the echidna backward, as new research suggests its ancestors probably lived in ...

Imagine a creature that looks like a mashup from a child’s wildest dreams: a furry animal with the bill of a duck, the tail ...

A small bone found 30 years ago at Dinosaur Cove could revolutionize our understanding of echidnas and platypuses' evolution.

As the world's only surviving egg-laying mammals, Australasia's platypus and four echidna species are among the most ...

Australia's burrowing echidna evolved from a water-dwelling ancestor in an "extremely rare" biological event, scientists said Tuesday in a new study of the peculiar egg-laying mammals.

New fossil evidence reveals insights into the evolution of monotremes, specifically platypuses and echidnas. A ...

A controversial idea suggests the ancestors of echidnas were more like the platypus. For the first time, fossil evidence ...

Analysis of single bone may tell us if the platypus is an evolutionary anomaly — starting on land, then returning to water.

New research questions the evolutionary history of some of our most peculiar mammals.A small bone found 30 years ago at Dinosaur Cove in Victoria ...

A study of a 100-million-year-old bone suggests the ancient relative of the echidna and the platypus was semiaquatic — and ...