http://dienekes.blogspot.com/2008/05/paleogenetics-of-cattle...
Research on modern cattle had suggested the Neolithic Near Eastern origin of domesticated cattle, but also that some of the European aurochsen
transmitted their mtDNA to European cattle. By looking at prehistoric mtDNA, the researchers were able to discover that the Neolithic to Bronze Age
cattle of Europe lacked the native aurochs mtDNA and were exclusively descended from the domesticated animals brought into Europe from the Near East.