This tooth was originally labelled as an Cardabiodon sp., but both dimensions and general crown's features led me to buy it due to curiosity (also was really cheap). The crown is higher than the root. The cutting edges bear no serrations. There're traces of secondary lateral cusplets. The lingual face of the root seems to have a rounded lingual foramen on the enlarged torus. The tooth, probably a lamniform, was collected near Fedorovka village, Tambov region, Russia and goes back to the Cenonian epoch (Cretaceous). Any guess?