ナショナルジオグラフィックのインスタグラム(natgeo) - 7月23日 09時00分

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One hundred and twenty-five million years ago, a badger-like mammal attacked a plant-eating dinosaur three times its size—moments before a volcanic debris flow buried them both. The result is an exquisitely preserved fossil from northeastern China which shows that sometimes, the mammals bit back.

Photograph by Gang Han

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