Howdy,
Nice find.
What you have there is an Angostura lanceolate. You can get by calling it a "spear point". This was made and utilized well before a Bow.
Our (Texas) coastline turns up a wide variety of points in the Angostura format... Yours leads me to venture an educated guess and label it as a Zella variant.
Dating from apx. 7500 to 6800 BC, most of the leading scholars classify Angostura points as early archaic.
On a side note - In Texas, many notables in the field have published works on the wide range of angostura-similar patterns found... Many, many points are now labeled as "Angostura Anomalies".
~Tejaas~