An 8.5 m long ammonite drag mark from the Upper Jurassic Solnhofen Lithographic Limestones, Germany.Published in:PLoS ONE, 2017, v. 12, n. 5, p. 1, doi. 10.1371/journal.pone.0175426By:Lomax, Dean R.;Falkingham, Peter L.;Schweigert, Günter;Jiménez, Alejandro P.Publication type:Article