Keywords: Walk cycle of a tetrapod.gif en An animated walk cycle of a tetrapod which made the Muz PGI 1728 II 16 trackway found in the Zachelmie quarry the Holy Cross Mountains Poland and dated to the early-middle Eifelian a part of the early middle Devonian 2016-10-07 own based on cite journal Niedźwiedzki Grzegorz; Szrek Piotr; Narkiewicz Katarzyna; Narkiewicz Marek; Ahlberg Per E Tetrapod trackways from the early Middle Devonian period of Poland http //www academia edu/407901/Tetrapod_Trackways_From_the_Early_Middle_Devonian_Period_of_Poland 7 January 2010 Nature 463 7277 43 “48 10 1038/nature08623 20054388 2010Natur 463 43N svg by Sceptic view - gif extracted by MaxxL other versions Muz PGI 1728-II-16 animated v20150114 svg cc-zero Tetrapoda fossils Middle Devonian fossils Devonian Animalia Devonian fossils from Poland Trackways fossils Walking animals Files by User MaxxL Animated GIF files |