The last of the giant trilobites from Portugal (for now). The Ordovician's equivalent of 'The Walking Dead' #geology #thestoryofslate http://pic.twitter.com/Xk5WD9y1vT
— John Van Hoesen (@Taconic_Musings) March 3, 2017
via Twitter https://twitter.com/Taconic_Musings
March 03, 2017 at 08:00PM
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