The echidnapus discovery offers a peek into the evolution of monotremes, the quirky group of egg-laying mammals that include today’s echidnas and platypuses. This ancient species existed before ...

The "echidnapus", bottom left, is among six monotreme species discovered at Lightning Ridge ... alongside evidence of several other ancient and now extinct monotreme species.

Ancient bones found in opal fields have given scientists a first-ever insight into a "civilisation" of echidna and platypus-like creatures that roamed Australia 100 million years ago.

Scientists have discovered a bizarre creature dubbed the "echidnapus" which they believe ... alongside evidence of several other ancient and now extinct monotreme species. Officially named Opalios ...

Scientists have discovered a bizarre creature dubbed the "echidnapus" which they believe ... alongside evidence of several other ancient and now extinct monotreme species. Officially named Opalios ...