Photo: Extinct Species of "Mosaic" Mammal Found in China

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An artist's conception (bottom) depicts Akidolestes, a previously unknown species of mammal that lived alongside dinosaurs some 125 million years ago.

A well-preserved fossil of the animal (top) was found in China, which researchers say strengthens the theory that the main mammal groups originated in Asia.

Illustration courtesy Mark A. Klingler/CMNH, photograph courtesy Zhe-Xi Luo

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