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Table I Chronology <br />PERIOD TEMPORAL SPAN MAJOR DIAGNOSTIC TRAITS <br />Early Man 7 to 7500 B.C. t 7 1. Lack of grinding implements. <br />{ 2. Large, well made projectile points. <br />Milling Stone 7500 D.C. ± Y to 1. Preponderance of manes and me-tates. <br />1000 P.C. * 250 <br />2. Ornaments made of stone. <br />3. Large and often crude projectile <br />points. <br />4. Cogstones, evolving into disccidals. <br />S. Charmstones. <br />6. Some mortars and pestles near end <br />of period. <br />Intermediate 1000 B.C. + 250 to 1. %one ornaments. <br />A.O. 750 ± 250 <br />2. Wide use of mortars and pestles, <br />along with manor and metates. <br />3. Use of steatite begins. <br />4. Many dsodals. <br />S. Large projectile points trending <br />to smaller in last part of period. <br />Late A.D. 750 ± 250 to 1. Shell ornaments. <br />Prehistoric Spanish contact <br />2. KDrtar, pestle, mano and metate <br />use continues. <br />3. Wide use of steatite. <br />4. Small, finely worked projectile <br />points, <br />S. Pottery vessels appear near the <br />end of the period. <br />14 <br />