Calderwood Point

This triangular side-notched point exhibits a distinctive elliptical profile, with a blade that sweeps outward in a pronounced excurvate curve before recurving inward toward the shoulders. The notching pattern is characterized by wide, shallow parallel notches that initiate low on the blade, defining a shoulder that rises at an acute angle and merges with an expanding stem. The notch removal process often truncates the corner of the preform, narrowing the stem and imparting a distinctive "fishtail" morphology. The basal edge varies in shape, ranging from straight to subtly concave or convex. The flaking pattern on this point is random, lacking a discernible order or orientation.

This type is mainly located in upper Idaho, southwest Wyoming, western Montana, and extends into lower Alberta, southeast British Columbia, and south Saskatchewan., complete range is not determined.