Found these when digging in my yard for a small project. After VERY BASIC research, seems like they might be NA artifacts? Any feedback welcome. Photo one is 1.5 x 2 x 3 inch ovoid. Next five photos is 3 x 4 x 2.5(but varies) inches. Last four is 7 x 3 x 2 inches and very dense/heavy. Thanks all.
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