Steve - I like Monsterrack's identification as a Sylvan Side-notched. Here is Ritchie's description.
Sylvan Side-Notched Points
Description prepared by Robert E. Funk
General description: Small to medium sized, thick, broad, sloppily manufactured side-notched points.
Size: Length ranges from 1 1/16 to 2 3/16 inches, the mode being 1 3/8- 1 1/2 inches. Breadth ranges from 5/8-11/16 inches, generally falling within 3/4-7/8 inch. The usual thickness is 1/4-3/8 inch.
Proportions: Length averages 1 3/4 to 2 times greater than breadth.
Shape: Blade usually ovoid in outline, rarely trianguloid. Cross section is biconvex. Side-notching usually broad and shallow, frequently asymmetrical. Base straight or convex, not ground. These points are rudely chipped by percussion.
Age and cultural affiliations: There appears to be some morphological overlap with Brewerton Side-Notched points. Sylvan Side-Notched points are rare to absent in Laurentian components in eastern New York, but are characteristic of the late Archaic Sylvan Lake complex, in which they occur as a minority type. The type assemblage for the complex was present in Stratum 2 at the Sylvan Lake Rockshelter, Dutchess County (Funk, 1965; n.d.). Age ranges between approximately 2200 and 1500 B.C., based on radiocarbon dates for the Sylvan Lake shelter and for similar manifestations in New England (Ritchie, 1965a; 1969).
Distribution: Principally eastern New York. Examples of the type have been seen by the writer in collections from Connecticut, and it appears to be a rare form in the Bare Island complex of Pennsylvania (Kinsey, 1959).
