Anybody know about Native American artifacts?

Maybe an acorn Motar. I am a member of the Mohawk Nation, and there are like Items in our Cultural Museum. Woodland Indians used acorns, more than corn, for flour...Interesting piece. You should contact Your Local Tribal Historian. They My be able to give you better insight...Looks VERY Pre Columbian..

I am going to a Veteran's Pow Wow next weekend in Salamanca New York and I am going to take it with me. I never thought about an acorn mortar. You are probably on the right track. We have two universities here and both have Anthro. departments. Thanks!!

White oak acorns seem to be the most palatable of any I've tried. But I understand that many varieties can be made somewhat more tasty with work.