Image: Polyptychodon tooth by Emmons

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Description: A sketch of two fossil teeth attributed to "Polyptychodon," but probably actually from the giant crocodilian Deinosuchus.
Title: Polyptychodon tooth by Emmons
Credit: Emmons, Ebenezer (1858) Report of the North Carolina Geological Survey, Henry D. Turner, pp. pp. 219–220 Retrieved on 24 February 2009.
Author: Ebenezer Emmons
Permission: This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1923. Public domain works must be out of copyright in both the United States and in the source country of the work in order to be hosted on the Commons. If the work is not a U.S. work, the file must have an additional copyright tag indicating the copyright status in the source country. PD-1923 Public domain in the United States //commons.wikimedia.org/wiki/File:Polyptychodon_tooth_by_Emmons.png
Usage Terms: Public domain
License: Public domain
Attribution Required?: No

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Image:Deinosuchus rugosus tooth by Emmons.png

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