Last steps of a horseshoe crab: fossil trail ends at the preserved body. #FossilFriday #DomeFossil http://pic.twitter.com/lJnZHMvM6y
— Scott Persons (@WScottPersons) March 17, 2017
via Twitter https://twitter.com/WScottPersons
March 17, 2017 at 10:52PM
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