Salvage excavations at the Perry Ranch site in southwestern Oklahoma uncovered the association of Plainview projectile points with an extinct subspecies of bison. A radiocarbon date of 7030 ± 190 B.P. has been obtained from bison bone at the site. However, stratigraphic disturbances limit inferences about the cultural activities at the site.
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Saunders et al. (1979) studied this question.
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