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 ...

Australia is known for its odd wildlife, but the echidna might just take the crown. With spines like a porcupine, a snout like an anteater, and the ability to lay eggs like a reptile, this bizarre ...

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

Australia's burrowing echidna evolved from a water-dwelling ancestor in an "extremely rare" biological event, scientists said ...

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

A small bone found 30 years ago at Dinosaur Cove in southeastern Australia could turn what we know about the evolution of ...

Giant prehistoric kangaroos perished when "climate upheaval" turned lush Australian rainforest into desert, scientists said ...