JHaberer, good observation. Turner and Hester characterize a Bulverde as having a thin finely chipped base that is wedge-shaped in cross-section. I re-examined the piece and the base does in fact have those characteristics. They also describe the Gary as usually being relatively crude and thick; this piece is neither. The two cultures do overlap both in time and geography. That short contracting stem is really too small for a Bulverde of that size. Its not the first blade I've seen over the years that had the characteristics of two cultures.