A recent reanalysis of a 108-million-year-old bone challenged the consensus that echidnas and platypuses descended from a single land-bound ancestor. The aquatic life was believed to have attracted 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.

A small bone found 30 years ago at Dinosaur Cove in southeastern Australia could turn what we know about the evolution of echidnas and platypuses on its head.