I saw this Cretaceous Lamniformes tooth pop up on the auction site that shall not be named and grabbed it. It was inexpensive so it is not really much of a gamble. It was sold as Cardabiodon sp. It comes from the Cenomanian of Russia, Fedorovka Village, Tambov region. That is all the geological information i could get. I have not really studied up on Cardabiodontid teeth very much as I planned on getting one down the road. I did take a look at some papers on Cardabiodon and Dwardius yesterday, I also looked around for photos to compare with the pictures we were given of the tooth. The scale in