I found this yesterday in a creek while arrowhead hunting, It seeme to be fossilized on the outside of the bone but the marrow is kind of squishy. Its heavy but also is waterloged. Its over 11 inches long, the pic shows either a cow or deer vertebra with it. What is this from? Im thinking a mammoth or mastadon?
(First pic shows dollar bill folded for size reference)
(First pic shows dollar bill folded for size reference)