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!
David Tanner (distributed via imaggeo.egu.eu)