Three‐dimensional evaluation of root canal morphology in lower second premolars of Early and Middle Pleistocene human populations from Atapuerca (Burgos, Spain) - Prado-Simón, Leyre; Martinón-Torres, María; Baca García, Pilar; Olejniczak, Anthony J.; Gómez-Robles, Aida; Lapresa, María; Arsuaga, Juan Luis; Bermúdez de Castro, José María (2012)