Pathologic Cow Shark Tooth

I found this nice cow shark tooth in the Yorktown formation, and I assumed it was Hexanchus. I showed it to Pat Y. at the end of the day, and she was kind enough to tell me the difference. You can draw a straight line down the cones on Notorynchus teeth, while the primary cone on a Hexanchus is out of whack and messes up the straight line, even on juvenile specimens. Even though its not what I initially thought it was, it has a pathologic curvature to one of the cones that definitely makes it an awesome find.