indian artifact?

[michiganman24]

hey my name is ty i found these 3 stones one is made of granet,and the other looks to be coarl and the small one i cant maby limerock ,they were all found in the same area in mid michigan and look almost eggshaped but perfectly
cirmetrical and polished...is anyone familer with theses i was thinking they might be Discoidal game balls please help...thank you i put some more pics up of my new finds

 

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[trikikiwi]

and Kia Ora Eathabs,

Quote:"Gizzard stones" of dinosaurs are typically white as they are made of calcium. Unquote

To my knowledge, that's not quite right. You might be thinking of "Gall Stones" which can form in the Gall Bladder and which can contain a lot of Calcium.

Gizzard stones were collected, as necessary, from wherever the "dinosaur" roamed - and therefore it moved different types of stone/rock, to other locations, where we find them where they died.
Here's a pic of one bird's collection

Cheers, Mike

 

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[Copperhead]

Ok, these rocks were found in an area that had evidence of early indian activity...the ones I found where in an area that produced arrowheads in the general area.....but were found still in the river....so can't they be river rocks USED as grinding stones and/or playing games? Obviously they shaped rocks for arrowheads, knives, etc....but some of their tools must have been naturally formed and adapted for other uses....

 

[Monty]

I owned an acreage once that was on old homestead in the late 1800s. Before that there was an Indian encampment up on a high place overlooking a creek. One huge fairly level layer of rock was clean and bare. Several place on the rock was deep indentations or perfectly round kholes. The guy who sold me the land told me the indentations were there where the squaws use to grind corn. They would drop the shucked kernals in the hole and use a round rock as a pestal to grind it up into meal. I never did find one of the round rocks they used to grind. Monty