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

The platypus and echidna, often regarded as some of the most peculiar animals on Earth, may be hiding a far more complex ...

The latest research suggests that echidnas and platypuses originate from an aquatic ancestor, rather than a terrestrial one, ...

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

New analysis of a 100-million-year-old fossil embedded in a rocky cove in Australia suggests echidnas may have evolved from ...

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

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

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

The new research could upend what’s known of the evolution of the most primitive mammals alive today. Found in Australia and New Guinea, the platypus and echidna are called monotremes ...