Angostura
- Time Period : 10000-3000 B.P.
- Location : South Dakota southward to Texas and W. Tenn.
- Shape : Lanceolate
Description:
A medium to large size lanceolate blade with a contracting, concave base. Both broad and narrow forms occur. Flaking can be parallel oblique to random. Bases are not usually ground but are thinned
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