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FIGURE 1: CHRONOLOGY, BASED ON KOERPER AND DROVER (1983) <br />PERIOD <br />TEMPQRAL SPAN <br />MAJOR DIAGNOSTIC TRAITS <br />Early Man <br />? to 7500 H.C. +I- ? <br />1. <br />Lack of grinding implements. <br />2, <br />Large, Nall made projectile <br />paints. <br />Milling Stone <br />7500 B.C- +I- 7 to <br />1. <br />Predominance of mantis and <br />1000 9.C. +1- 250 <br />metates. <br />B. <br />Ornaments made of stone. <br />3. <br />Large and often crude projectile <br />points. <br />4, <br />Cogstones, evolving into <br />discoidals. <br />5. <br />Charmst ❑nes. <br />6. <br />Some mortars and pestles near the <br />end of the period. <br />Intermediate <br />1000 B.C. +I- 250 to <br />1. <br />Bone ornaments. <br />A.D. 750 fl- 250 <br />2. <br />Wide use of mortars and pestles <br />along with manos and metates. <br />3. <br />Use of steatite begins. <br />4. <br />Many discoidals. <br />5, <br />Large projectile points trending <br />to smaller in the last part of <br />the period. <br />Late <br />A.G. 750 +I- 250 to <br />1. <br />Shell ornaments. <br />Prehistoric <br />Spanish contact <br />2. <br />MArtar, pestle, mano and metat2 <br />use continues. <br />3. <br />Small, finely worked projectile <br />points. <br />4. <br />Wide use of steatite. <br />5. <br />Some pottery vessels appear near <br />the end of the period. <br />13 <br />75C -761 <br />