How Did Birds Lose Their Teeth And Get Their Beaks? Study Offers Clues
Modern birds are dinosaurs without toothy jaws, and with bigger brains. Newly published research fills in some of the missing links in their evolution.
Đọc tiếp trên NPR
May 3, 2018 at 12:03AM
Environment
NPR News: How Did Birds Lose Their Teeth And Get Their Beaks? Study Offers Clues
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