From William Beebe (1915) “A Tetrapteryx Stage in the Ancestry of Birds”
  1. From William Beebe (1915) “A Tetrapteryx Stage in the Ancestry of Birds”

  1. 33 notesTimestamp: Friday 2011/07/29 1:30:52ArchaeopteryxTetrapteryx
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    This prehistoric bird is so cool. That’s why my username is archaeopteryx :)
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