Neanderthal exploitation of marine mammals in Gibraltar. by Stringer, C, Finlayson, J, Barton, R, Fernández-Jalvo, Y, Cáceres, I, Sabin, R, Rhodes, E, Currant, A, Rodríguez-Vidal, J, Giles-Pacheco, F, Riquelme-Cantal, J