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

Of course, not just the platypus but every living organism is a mix of both conserved, primitive characters and evolutionary novelties—thus, a mouse is just as "weird" as a platypus from an ...

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

When it was discovered, the platypus was difficult to classify, bearing characteristics of mammals, reptiles and birds. The platypus type specimen is held in the Natural History Museum's collection To ...

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

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