New fossil evidence suggests echidnas evolved from a water-dwelling ancestor, not a land-based one. The bone structure ...

Some creatures made it from the prehistoric era to today. Discover 5 species that have survived since the age of dinosaurs.

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

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

Neither animal has teeth, and though they both produce milk ... time of dinosaurs probably shared a lot more biology with a monotreme than with a horse, a dog, a cat or ourselves.” ...

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

New research questions the evolutionary history of some of our most peculiar mammals. A small bone found 30 years ago at Dinosaur Cove in south eastern Australia could turn what we know about the ...

An analysis of the interior of a single bone suggests its owner was probably an aquatic or semi-aquatic animal. Since the ...

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