Small mammals as tools to characterize archaeological contexts in the Chalcolithic of El Portalón site (Atapuerca, Burgos, Spain) - Ordiales, Amaia; Rofes, Juan; Iriarte, Eneko; Mardones, Verónica; Cuenca Bescós, Gloria; Carretero Díaz, José Miguel; Arsuaga, Juan Luis; García-Ibaibarriaga, Naroa (2014)