The more controversial sites of vastly older bones are now closed to excavation - these are south of the boarder - and dates were estimated in the 200-250,000 year range ...
Would appreciate a reference to the 200-250,000 year old sites.
Calico: A 200,000-year Old Site In The Americas? ASA On Line ^ | unknown
Posted on 12/17/2001 5:22:22 PM by blam
Calico: A 200,000-year old site in the Americas?
New World archaeological sites inferred to be even slightly older than the 11.5 ka Clovis complexes have been controversial; so claims for a 200 ka site in North America have heretofore been treated with substantial disdain. But the acceptance of Monte Verde and Diring may soon change that.
The classic "ancient site" in the New World is "Calico," located in the Central Mojave Desert of California (Shlemon and Budinger, 1990). Two issues have dogged acceptance of Calico by mainstream archaeologists: (1) the authenticity of the artifacts; are they truly the product of human manufacture, or merely naturally produced "geofacts?" and (2) the obvious pre-Clovis age of the deposits (see, for example, lengthy discussions in Leakey and others, 1968; Haynes, 1973; Bryan, 1978; Taylor and Payen, 1975; Carter, 1980; Meighen, 1983; Patterson, 1983; and Budinger and Simpson, 1985).
Thought to be about 200 ka old, the deeply buried chert and chalcedony tools of Calico are usually dismissed as being artifacts. However, if shown to respected Old World archaeologists, many Calico assemblages are readily described as typical Paleolithic implements. Regardless, when told that the ancient tools come from the New World, these same archaeologists then often reject their original interpretation! So much for unbiased reasoning in science! Nevertheless, although it will take time, the pre-Clovis Monte Verde site in Chile and the 260 ka Diring site in Siberia may well provide a "stepping stone" for mainstream archaeological acceptance of the Calico site.