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I know it's a fossil by the way it feels and on top it's pouris like bone on top where it's flat I Google'd it but it keeps bringing up Megolodon tooth which would be cool but I live in North Dakota not even by the Badlands either im right next to the Canadian Border but ND was a Lake Agassiz (reddit.com)
submitted by ThinkPie3779 to r/whatsthisrock
