Arms into feathered wings; bones hollowing out; morphology minimizing: The lineage of modern day birds includes the Tyrannosaurus and the Velociraptor, dating back over 50 million years.
Arms into feathered wings; bones hollowing out; morphology minimizing: The lineage of modern day birds includes the Tyrannosaurus and the Velociraptor, dating back over 50 million years.
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