“…According to Eisenmann (2002), during the beginning of the Early Pleistocene (∼2.5-1.7 Ma), usually one equid species was present, whereas in younger localities the co-existence of two species became more frequent. This co-existence is reported from several localities such as Dmanisi (Georgia), Selvella, Pirro Nord (Italy), Fuente Nueva-3, Barranco León-5 (Spain) and Untermassfeld, dated after the terminal Tasso Faunal Unit (FU) of the Italian Early Pleistocene, and coincides with the earliest hominin dispersals into Europe (Alberdi and Palombo, 2013;Lordkipanidze et al, 2007;Rook and Martínez-Navarro, 2010). However, to date, the strongest biochronological indicator recovered from TSR is Bison sp.…”