Cretoxyrhina mantelli lateral w/cusps

I am not sure what it is, but I would love one. You don't perhaps want to trade it for a free mason pipe (I have it pictured in the trade section) or for a nice angustidens? PM if interested.

I think it's a lower lateral tooth of Cretoxyrhina. From what I've seen Cardabiodon has straighter lower teeth. The cusplets are well-developed compared to other Cretoxyrhina teeth I've seen with them. You didn't give the formation but it could be the Greenhorn known from sites in Butte County at least.