I found these small rocks with holes in them on a beach on Lake Ontario (NY side). They all look like sandstone, but the color and size of the rocks (and holes) vary. Why do they have holes?

4yr ⋅ ⋅

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I found these little “hag stones” on the western shore of Lake Ontario in NY. They appear to be sandstone, with various sized small holes. Do you think the holes were drilled by ancient mollusks or bivalves...or worms? Does this count as a fossil?

4yr ⋅

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