恐龙 Pop Quiz

What is the only clade of 恐龙 to have survived the Cretaceous–Paleogene extinction event?
 What is the only clade of 恐龙 to have survived the Cretaceous–Paleogene extinction event?
Choose the right answer:
Option A Birds
Option B Whales
Option C All of them
Option D Crocodiles
 makintosh posted 一年多以前
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