Mississippian Shark

[Th13teen13]

I need help 2 give an id 2 this fossil  

it is from The Mississippian age found in Harrodsburg Limestone Formation

Washington County, Indiana On the tag is saying it is Orodus which wasn’t around at that  time and wasn’t a Hybodont  Someone Who works with lots of Carboniferous fossils said it could be a Saivodus root(maybe upside down) what do you think. The root/tooth is about 0.75 cm in size what do you think ? The bottom picture is a fossil of a Saivodus

[deutscheben]

That doesn’t look like a cladodont type root, but it could be the underside of a crusher tooth of some sort. I don’t see any features in the picture that would allow me to make a better ID unfortunately.