Upper Permian Vertebrate Coprolites from Vyazniki and Gorokhovets, Vyatkian Regional Stage, Russian Platform Owocki, K. ; Niedzwiedzki, G. ; Sennikov, A. G. ; Golubev, V. K. ; Janiszewska, K. ; Sulej, T. Abstract Publication: Palaios Pub Date: January 2013 DOI: 10.2110/palo.2012.p12-017r Bibcode: 2013Palai..27..867O