An artist’s impression depicts Kryoryctes at Dinosaur Cove in Australia. New research supports the hypothesis that Kryoryctes is a common ancestor of both the platypus and echidna. - Peter Schouten ...

WASHINGTON, July 18 (Reuters) - A shrew-like primitive mammal that inhabited China 165 million years ago represents a milestone in mammalian evolution, scientists said on Thursday, boasting a key ...

Which group of mammals has the more 'primitive' reproductive strategy -- marsupials, with their short gestation periods, or humans and other placental mammals, which have long gestation periods? For ...

Scientists have just published compelling evidence that your great (great great…) grandmother was a shrew. Or rather, a shrew-like creature. A team of researchers discovered a new fossil species that ...

At a time when the vast majority of mammals were the size of shrews and mice, Vintana sertichi was a super heavyweight. Researchers have unearthed the skull of a primitive mammal with remarkably keen ...

A newly identified primitive mammal-like animal was agile, sleek and had a voracious appetite for meat. The animal, identified as a varanopid pelycosaur and part of the genus Aerosaurus, looked like ...

Above: Artist's depiction of three new species of fossil condylarths: From left to right, Conacodon hettingeri, Miniconus jeanninae and Beornus honeyi. (Credit: Banana Art Studio) Paleontologists at ...

Primitive air-breathing fish, whose direct ancestors first appeared around 400 million years ago, show mechanisms controlling the heart which were previously considered to be found only in mammals -- ...

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