One example of the cotypes has one straight and one recurvate blade edge.
The blade is usually excurvate but may be straight or recurvate.
The blade is usually incurvate; rarely, recurvate or straight.
The blade is usually straight; rarely, excurvate or recurvate.
The blade is recurvate as a result of the hafting constriction.
The shoulders are inversely tapered with narrow barbs that may be expanded, especially on examples with recurvate blade edges.
Most blades display one excurvate and one recurvate or, rarely, straight edge.
The blade is usually straight to excurvate, but may be incurvate or recurvate (Suhm, Krieger and Jelks, 1954).
It is similar to Ledbetter Stemmed points (Kneberg, 1956), but both blade edges are recurvate.
Blade edges may be excurvate, straight, or recurvate and usually have an angular break in the blade outline near the distal end.