Image: Petroxestes borings Ordovician
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Description: Petroxestes borings in an Upper Ordovician hardground, southern Ohio.
Title: Petroxestes borings Ordovician
Credit: Photograph taken by Mark A. Wilson (Department of Geology, The College of Wooster). [1]
Author: Wilson44691 at English Wikipedia
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
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