Sachs, S., Scheer, U. & Rabi, M. (2016) Reste von protostegiden Meeresschildkröten aus dem Cenomanium (Oberkreide) des Kassenberges (Mülheim an der Ruhr, Westdeutschland / Protostegid marine turtle remains from the Cenomanian (Late Cretaceous) of the Kassenberg (Mülheim an der Ruhr, Western Germany). Berichte Naturwissenschaftlicher Verein für Bielefeld und Umgegend 54: 32-43.
—Postcranial remains of protostegid turtles from the lowermost Cenomanian of Mülheim an der Ruhr (Western Germany) are described. The material includes fragments from the carapace and appendicular skeleton of a taxon with a medium carapace length of approximately 20-30 cm. The turtle remains supplement the record of this group from the Cenomanian of Germany and the fossil fauna of the Kassenberg.
