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<br /> <br /> <br />Table 3. Time Framework of Geologic Events and Aboriginal Cultures* <br />fears Before Continental Divide <br />Present Culture And Ciroue Glaciation <br />0 Historic Ute, Arapahoe <br /> and Shoshoni <br />500 Upper Republican; Fremont <br />1500 Ceramic-Plains Woodland <br />2000 Preceramic-Plains Ioodland <br />2500 Late Archaic <br />4000 Middle Archaic <br />6000 Early Archaic <br />7000 Paleo-Indian <br />9000 (Cody) <br />10,000 (Folsom) <br />11,000 (Clovis) <br />14,000 <br />Palee-Indian Period <br />Arapahoe Peak Advance <br />Audobon Advance <br />'I~iple Lal<es Advance <br />Altithermal Climatic Episode <br />Satanta Pea!: Advance <br />Pinedale Advance <br />It is traditional to date the bee inning of the Paleo-Indian period at about 12,000 B.P., or <br />a little earlier. It is now becoming apparent, however, that nearby areas were occupied <br />by a pre-Clovis culture with a tool technology based, in lar;e part, on the bones of <br />extinct Pleistoce~ie fauna (Bonnichson 1978; Stanford 1978). Very little is known about <br />this "pre-projectile point stage" (;Vormin;ton 1957), although an increasing number of <br />reliably dated, stratified sites are being reported (Bryan 1978). This "pre-projectile point <br />stave" has been geologically dated at 17,000 B.P. in eastern Colorado, and is under a <br />level containing Clovis material (Stanford 1978). <br />*Adapted from Eddy and SVindmiller (1975) <br />15 <br />