I bet you didn't know what hit you
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I bet you didn't know what hit you

by David Tanner, Leibniz Institute for Applied Geophysics (LIAG), Hannover, Germany

This is the posidoniform bivalve species, Posidonia becheri, stuck on the bottom of a 1m thick greywacke bed. The sequence is Lower Carboniferous (Kulm II) flysch, and this poor chap was just sitting there when the turbidite hit and transported him away!