monster tooth ???

[mojjax]

I found this in Ohio when I was a little kid while visiting relatives back in the 1970's . The farmer down the road was digging a farm pond with an excavator . My friends and I were playing in the dirt piles , I found this "tooth thing" sticking out of the ground . I've had it ever since . It weighs over 3 lbs . I have been using it as a door stop . it seem too big to be from a horse or cow . Any ideas ? Thanks ,
Mojjax

 

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[T-Rex]

What part of Ohio? I live in Northern Kentucky where the Lewis & Clark expedition found a huge amount of prehistoric bones at a salt lick called Big Bone Lick...

http://parks.ky.gov/stateparks/bb/

 

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[Crystallize]

I actually found an exact match for that tooth from an african elephant.?

http://animaldiversity.ummz.umich.e...odonta/l._africana/163809.tooth.jpg/view.html

Specially compare the last pair of spikes on it.