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Bottom of two Urchins were found in a creek that runs in north east Grayson co. Texas. I believe that they are in the Pawpaw formation, but could be Duck creek?

From the album:

Grayson Co. Texas finds

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Photo Information for Echinoids

Taken with NIKON COOLPIX P510

  • 12.4 mm
  • 10/500
  • f f/3.9
  • ISO 400
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