Rhode Island Arrowheads

From Josh in Rhode Island:

I found [these] side by side looking like one shouldered sandia points. These two points were found at low tide right next two each other made from argillite.  One was knapped well and the other was a flake retouched. maybe they were eroded from a burial...either way I was happy to find them! North Kingstown, RI in July 2019

Josh also writes:

I've found some interesting material that looks paleo.  Looks like a paleo base made from ohio flint ridge chert but I'm not sure.  Found what looks to be a small paleo projectile point made from quartz at the same spot.  Many other points as well.