Yuri Kimura

Tiny teeth discovered from Inner Mongolia are new species of today’s birch mouse, rare “living fossil”

Sicista_betulina%2Ccredit%20Dodoni%20400x300.jpgTiny fossil teeth discovered in Inner Mongolia are a new species of birch mouse, indicating its ancestors are much older than previously reported, says SMU paleontologist Yuri Kimura.

The fossils were discovered in sediments that are 17 million years old, says Kimura, who identified and named the species Sicista primus. This adds millions of years to the rodent family Sicista, she said.
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