1 1/8" probable Pterosaur tooth, Bissekty Formation, Uzbekistan. A rare formation to obtain fossils. 90-92 Million years old, the Bissekty Formation has outcrop in the Kyzyl Kum desert of Uzbekistan. This tooth has many features similar to pterosaur teeth, but no toothed pterosaur teeth have been described in the Bissekty Formation. So I can only say this is a probable pterosaur tooth.