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 ...

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 ...

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 ...

Jan. 4 -- The specialized teeth that enabled ancient, shrew-like creaturesto flourish and gave rise to all modern mammals evolvedindependently in two animal groups living continents apart, a ...

Researchers at Uppsala University, Swedish University of Agricultural Sciences and Broad Institute have discovered a previously unknown gene ZBED6 that is unique to placental mammals. The gene ...

In a set of experiments involving mice, Chinese researchers have shown for the first time that adult mammals can harbor primitive cells capable of becoming eggs and producing offspring. Their finding ...

"Most people, including Australians, don’t know about most mammals in Australia," says Jack Ashby, author of the new book Platypus Matters . reading time 5 minutes Eighty-six years ago today, the last ...

(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 ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. The story of two of ...