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File:Tetrapteryx.jpg

Tetrapteryx.jpg(500 × 300 pixels, file size: 32 KB, MIME type: image/jpeg)

Summary

Description
English: The hypothetical bird ancestor Tetrapteryx.
Date 1915
Source http://penguinology.blogspot.com/2010/02/bird-from-dinosaur-or-was-it-other-way.html
Author William Beebe

Licensing

Public domain
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United States
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