Artifact/ fossil

[Rockcrk]

I'm no archeologist but I think this is a paint pot/mortar with a clam shell fossil that has been pecked around and set free.

[redrocks]

Cool piece

[Narrow Way Knapper]

That's a unique find.

[SDhunter]

Could be a nutting stone?

[Rockcrk]

Yeah it falls into the paint pot, nutting stone, cupping stone category