Ptychodus tooth?

[Lone Hunter]

From Grayson marl in Tarrant co,  doesn't look like the other ptychodus teeth I have but don't know what else it could be. Really thrown off by the hole. Eager to learn it's identity.

[LSCHNELLE]

It is too difficult to say. Ptychodus teeth often can be worn by being swallowed by other sea creatures and this has that digested look. However, the lack of a well-defined root structure and the current appearance could be attributed to some other type of ironstone nodule or broken fossil remnant. Certainly, Ptychodus have been found and the equivalent of the Del Rio clay and Grayson Marl.  But, I think that this doesn't provide enough information to be a definitive tooth.

[JohnJ]

I agree with Lee.  

 

This looks more like a broken hematite or limonite nodule.