North European Plain Germany
Geological Time: Neogene Miocene
Reinbekian
the raw material was collected, the specimens extracted and photographed by Dieter Ketelsen
initial part interpreted to be curved and not enrolled
The identification is based upon:
, : Orbigny, A. D. d'. (1826). Tableau méthodique de la classe des Céphalopodes. Annales des Sciences Naturelles. vol. 7: 96-169, 245-314. Plate , Fig.