In 2015, a study mapped the first genome of a 35,000 YBP Pleistocene wolf fossil found in the Taimyr Peninsula, arctic northern Siberia and compared it with those of modern dogs and grey wolves. The Taimyr wolf was identified through mDNA as "Canis lupus" but from a population which had diverged from the dog–grey wolf lineage immediately before the dog and grey wolf diverged from each other, which implies that the majority of grey wolf populations today stems from an ancestral population that lived less than 35,000 years ago but before the inundation of the Bering Land Bridge with the subsequent isolation of Eurasian and North American wolves.