Ancient DNA analyses reveal high mitochondrial DNA sequence diversity and parallel morphological evolution of late pleistocene cave bears. by Hofreiter, M, Capelli, C, Krings, M, Waits, L, Conard, N, Münzel, S, Rabeder, G, Nagel, D, Paunovic, M, Jambrĕsić, G, Meyer, S, Weiss, G, Pääbo, S