The DNA used in these studies was obtained from the Oxford specimen, and since this material is degraded, and no usable DNA has been extracted from subfossil remains, these findings still need to be independently verified.
O ADN utilizado neste estudio obtívose do exemplar de Oxford, e xa que ese material está moi degradado e non se extraeu ADN utilizable dos restos subfósiles, estes achados precisan dunha verificación independente adicional.