Spiny anteaters

Usage examples of echidnas.

We've just finished sequencing and comparing the allogenomes of echidnas and, of course, platypuses.

He quickly became a leading expert on all kinds of animals living and extinct—from platypuses, echidnas, and other newly discovered marsupials to the hapless dodo and the extinct giant birds called moas that had roamed New Zealand until eaten out of existence by the Maoris.

The offspring may eventually be packaged for release within a protective eggshell, together with an energy supply in the form of yolk—as in all birds, many reptiles, and monotreme mammals (the platypus and echidnas of Australia and New Guinea).