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<br /> <br /> <br />identified with the McKean Complex: lanceolate and stemmed <br />projectile point types. <br />- Late Archaic Period: ca. 3500 to 1800 B.P. (1500 B.C.to <br />A.D. 200). Phis period is characterized by a wider variety of <br />regional types of lithic assemblages than the preceding period. <br />There is increasing evidence for communal bison hunting (Frison <br />1578). ?he end of the Late Archaic is usually thought to <br />coincide with the introduction of the bow and arrow. <br />Ceramic Stage: 1800 to 200 B.P. CA.D. 200 t^ 1800). In <br />addition to the bow and arrow, the Ceramic Stage is characterized <br />by the use of pottery, architecture,and at least rudimentary <br />horticulture. Subsistence patterns vary with time within this <br />stage and are discussed below. <br />- Early Ceramic Period: ca.1BD0 t^ 1100/1000B.P. (A.0.200 <br />tc 900/1000). Also called the Plains Woodland, this period shows <br />a growing distinction between sites in southeastern Colorado and <br />those in the northeastern part of the state after about A.D. '350; <br />the term, Graneros Focus/Phase, has been applied t^ the latter <br />part of the period in the drainage of the Arkansas River. <br />Archaeological manifestations of the period include:small, <br />corner-notched prc,Jectile points C"Woodland" points) early, and <br />small, side-notched points later; cord-marked pottery; and <br />surFace architectural Features. Subsistence was probably still <br />heavily dependent on hunting-gathering, but maize and other <br />cultigens provided some input to the diet. <br />- Middle Ceramic Period: ca. 1100/1000 t^ SOOB.P. <br />CA.D.900/1000 to 1500). In this period, cultural dynamics in <br />southeastern Colorado became increasingly more complex, in part <br />6 <br />