First finding of tooth of Ptychodus (Elasmobranchii: Lamniformes) in moraine of the Kaliningrad Region
For the first time, a find of an incomplete tooth (a fragment of the crown) belonging to a Cretaceous shark of the genus Ptychodus has been discovered in the Kaliningrad Region, within boulder-pebble material along the seashore near Zelenogradsk. Previously, the geographically closest remains of Ptychodus were known from Upper Cretaceous reworked deposits in Lithuania....
