Sixty Artifacts and Other Specimens denoting or suggesting human activity were found in and near the Olsen-Chubbuck fossil arroyo and in the bone bed which it contained (Table 20). Forty-seven specimens came either from within the bone bed itself or form the surface among the bones exposed by weathering. One specimen came from the upper, later fill of the arroyo where it had been partly exposed by weathering, and the remaining 12 specimens came from the surface of the site near the arroyo. Along the ridges to the north and west of the arroyo a number of artifacts deriving from later occupation of the area were found.

Twenty-seven of the 47 specimens from the bone bed and the bone-bed surface are projectile points, of which 21 are whole or nearly so, and 6 are tips, midsections, or bases of projectile points.

Those specimens found by Chubbuck and Olsen are designated F-l, F-2, etc. for whole projectile points, and PF-1, PF-2, and so on, for point fragments. All specimens found by the University of Colorado Museum party bear University of Colorado Museum catalog numbers.