Greater North Sea
Geological Time: Quaternary Holocene recent
the specimen is collected and photographed with the Vega3 Tescan SEM of Senckenberg am Meer by Michael Hesemann
surface detail
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.