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Science & Technology

Researchers say a small fossil from the middle Jurassic provides some of the oldest evidence of chewing and swallowing as well as suckling — all distinctly mammalian traits.
Chang-Fu Zhou/Shandong University of Science and Technology
It's likely you've already chewed and swallowed some tasty morsel today. But when did that ability emerge? New evidence points to at least the middle Jurassic, back when dinosaurs still reigned.
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