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单词 Hadrosauridae
释义
Hadrosauridae

Geology and Earth Sciences
  • Duck-billed ornithischian dinosaurs, of possibly amphibious habits, which averaged about 9m in body length. Several mummies of hadrosaur dinosaurs have been found, from which it was possible to establish that they were unarmoured and that the digits of the forelimbs were connected by a web of skin. Hadrosaurs flourished in the Upper Cretaceous.


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