Australian researchers have discovered the oldest confirmed platypus specimen along with a new species they've named ...
Today, egg-laying mammals are rare oddballs, with creatures like the platypus and echidna standing out in the animal kingdom. But it wasn’t always this way: Australia may have once been dominated by a ...
As bones encased in rock rotted away, water-borne silica seeped into the crevices, solidifying into opal and preserving ...