The earliest Palaeoindian Big Game Hunting culture, from the plains of New Mexico, 10,000-9000 BC. Best-known is the type site of Blackwater Draw; other sites were located in what was once boggy lakeshore. Its chief diagnostic trait is the presence of Clovis materials, especially the fluted point, in association with mammoth remains. Evidence of the culture exists throughout North America: as far south as Iztapan, Mexico, as far north as Worland, Wyoming, and possibly as far east as Debert, Nova Scotia. The large plateau of Llano Estacado covered eastern New Mexico and the Texas Panhandle.