Found in Australia and New Guinea, the platypus and echidna are called monotremes, and they are unique for being the only mammals that lay eggs. The amphibious platypus has a bill and webbed feet ...

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An analysis of a 100-million-year-old fossil has found that the creature it belonged to, similar to a monotreme like the echidna and platypus, was water-dwelling. The study supports the theory ...

(CNN) — The story of two of the strangest animals on the planet just got a little stranger, thanks to clues revealed by a lone fossil specimen that scientists now say represents a long-extinct ...

This arm bone, from a species called Kryoryctes cadburyi, belongs to an ancestral monotreme – a semi-aquatic burrower like the platypus. Our findings support the hypothesis that land-living ...

Up until now, the accepted understanding about these egg-laying monotremes—arguably the most unusual mammals on the planet—was that they were both descended from a land-bound ancestor.

A new study published Monday in the journal PNAS, upended the widely held theory about monotremes—the most ancient living order of mammals, now down to just platypuses and echidnas.

The patient was standing in several administration diagrams. SAN DIEGO — Standing vs. supine or sitting was the position in which an epinephrine autoinjector device was administered in several ...