Tài liệu tham khảo WikiPedia: Banffidae http://paleopolis.rediris.es/cg/20/10/index.html //doi.org/10.1111%2Fj.1475-4983.2006.00606.x //doi.org/10.4267%2F2042%2F70836 //www.worldcat.org/issn/1634-0744