How do I authenticate a Mastodon tusk?

My friend found a tusk and wants to get it authenticated but we are not sure how. Help please. Thank you or:My friend found a tusk and wants to get it

My friend found a tusk and wants to get it authenticated but we are not sure how. Help please. Thank you

or:My friend found a tusk and wants to get it authenticated but we are not sure how. Help please. Thank you

or:Ask for advice at a museum. It is against the law to keep some kinds of tusks, so what you are asking is whether it is legal to keep this thing.

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