Indian Mortar?

[Unitedstatesofamerica1]

4 inches wide 2 inches length

 

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[NCPeaches]

I don't know if it is/was a mortar and I would definitely think it is but loving the fossils in/on it...Great find!

 

[IAMZIM]

Looks like a really cool stream worn fossil conglomerate! Don't think it is a mortar, but I am not an expert.

 

[DigIron2]

I always heard to look for swirl marks.would be a really nice one if it is,either way it is nice fossil!

 

[Unitedstatesofamerica1]

It looks like there is red and black paint at the bottom

 

[Treasure_Hunter]

Natural rock, not a mortar...

 

[rock]

Looks like a bigger fossil eroded out and left the hole.

 

[unclemac]

I would think that to be limestone...I have found a few pieces like that along the DuPage.

 

[Peter Iredale]

Thats a fossil.