found in the Baylei/Cymodoce Ammonite Zones at
Black Head
near Osmington Mills
United Kingdom and Ireland UK
Geological Time: Jurassic Upper Jurassic Kimmeridgian
Kimmeridge Clay Formation
The raw material was collected together with Dr. Steve Etches and Chris Webb. Specimens were picked and photographed by
The identification is based upon:
, : Römer, F. A. (1841). Die Versteinerungen des Norddeutschen Kreidegebirges. Mit sechszehn lithographirten Tafeln. Hahn'schen, Hofbuch-handlung, Hannover. [1840] iv + 49-145, pls. 8-20. Plate , Fig.