For a long time, paleontologists weren't sure whether Archaeopteryx had feathers all over its body or just on its wings.

  • 在很长一段时间里,古生物学者都不能确定始祖鸟是全身都有毛还是只有翅膀有毛。

  • 互联网摘选 2025-01-19 23:46:48

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