Maybe it was an Alligator Snapper Turtle...
My old farm was across from a lake owned by the DNR, so no fishing, no critters were ever disturbed, etc.
From time to time I’d find huge, and I mean HUGE, snappers in my yard who had managed to make it across a relatively busy road.
So happy none of my kids, pets, ME or the free-ranging chickens ever got bitten!
So, I’m going with your Snapper Theory. ;)
[[Sturgeon do not have teeth. ]]
The wealthy ones with enough money for false teeth do-
Not likely, Lake Michigan is much too cold and not the type of environment where they are naturally found.....
>>Maybe it was an Alligator Snapper Turtle...
No. Alligator snappers are very lazy. They sit on the bottom and use their tongues as bait. They also are too small to do much damage.