Brewerton Eared-Notched

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Like the other Brewerton styles, Brewerton Eared-Notched is part of the Laurentian Tradition. It is Late Archaic in age. The blades can be triangular or Lanceolate. Shallow side notching removing the lower blade edge results in tangs or ears that flare out so that the base, mostly concave, sometimes straight, is wider then the blade. Here is William Ritchie's description from his New York typology:
http://collections.nysm.nysed.gov/pr...d_notched.html
Maryland typology guide:
https://apps.jefpat.maryland.gov/dia...edNotched.html
And the description from lithics-net:
http://www.lithicsnet.com/brewertonearednotched.htm

Three quartzite examples from coastal RI:


An argillite example from Dighton, Ma. With prominent ears and deeply concave base:


References relied upon:
A Handbook of Indian Artifacts from Southern New England(1991) by Curtiss Hoffman
A New England Typology of Native American Projectile Points(2008) by Jeff Boudreau

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A classic argillite example from Newport Co., RI: