donderdag 25 augustus 2011

Jurassic Mammal Moves Back Marsupial Divergence

Jurassic Mammal Moves Back Marsupial Divergence: Juramaia sinensisA newly described pointy-nosed, rat-like animal did not just crawl out of some unsuspecting city’s sewers. Rather, this now-extinct species spent its time scampering among prehistoric trees some 160 million years ago during China’s Jurassic period. Its modern appearance might seem unremarkable, but its advanced anatomical features—both internal and external—are exactly what have drawn the [...]

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