Ptychodus polygyrus

This catalog contains exceptional teeth from one of very difficult to locate Ptychodus sharks - Ptychodus anonymus, Ptychodus polygyrus, and Ptychodus whipplei, Hybodotid sharks. These teeth were found in the Niobrara Chalk Fm. of Gove County, These are beautiful, well preserved teeth. Note - 1) These teeth sizes are width unless otherwise noted.

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