#ThinsectionThursday - Jurassic (Bathonian) echinoid plate acting as a nucleus to ooid formation. Pictures taken in PPL, CL and SEM. http://pic.twitter.com/W5RjxilgPi
— Robert Richardson (@terrarob101) April 27, 2017
via Twitter https://twitter.com/terrarob101
April 27, 2017 at 12:52PM
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