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 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 ...

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

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

with the ancestors of platypuses then venturing into the water. Both animals are monotremes, the only living mammals that lay ...