I found this tooth yesterday, just perched on the sand bar, off the Mississippi River, pretty as you please. It's from a juvenile Mastodon, tumbled down the river from??? It could be from Minnesota, Michigan, Missouri...who knows!!
I've never landed on a sand bar. It was massive...miles wide and long, but 2-3 foot drop in places...very fine patches...rode all over the place in 4 wheelers..it was begging to be landed on but how do you properly scout it out?? I imagine this has been touched upon many times.
p.s. sorry about picture quality..iphone pix.