Evolution of occlusal shape of the first and second upper molars of Middle–Late Pleistocene collared lemmings (Dicrostonyx, Arvicolinae, Rodentia) in northeast European Russia.
Evolution of occlusal shape of the first and second upper molars of Middle–Late Pleistocene collared lemmings (Dicrostonyx, Arvicolinae, Rodentia) in northeast European Russia.
