Very old tooth

[diginupbones]

I have a pretty good idea of what this is but I would like to hear from the experts!

[Harry Pristis]

It's a tridactyl horse upper cheek tooth.

[diginupbones]

Just what I was hoping for! Thanks 

[fossillarry]

Is this tooth from Florida? It's  a well worn upper M3. If it is from the Bone Valley district the tooth , base on size 22-23 mm, and lack of posterior curvature of the parastyle and anteror curavture of the metastyle  and shape of the protocone is form  Neohipparion most likely N trampasense .

[diginupbones]

This tooth was found in north central Nebraska, in the Niobrara River valley about a week ago. Thanks for your help!