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Unusual osteolytic defects in ancient South Dakota skulls.

Unusual osteolytic defects in eight skulls culled from over 4000 ancient South Dakota burials are presented, discussed briefly, and assigned to what we think is their most likely cause. Because these are collection skeletons, histological and microbiological and microbiological confirmation of interpretations concerning specific lesions are not possible. Corroboration of our opinions has been sought through radiographs and by expert consultation elsewhere. Although our opinions are interpretative and subject to rebuttal, they can serve as a base for future research if and when similar specimens are discovered elsewhere. In addition, these specimens are indicators of other than usual ancient skull pathology from a limited geographic area, representing people who lived there during a known time frame.