in clay pits in Hammerthal
North European Plain Germany
Geological Time: Paleogene Oligocene Rupelian
the specimen is photographed by Michael Hesemann with the SEM VEGA3 TESCAN at Senckenberg am Meer and contributed by
The identification is based upon:
, : d'Orbigny, A. (1826). Tableau méthodique de la classe des céphalopodes. Annales des Sciences Naturelles (1) 7: 96–169. Plate , Fig.