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 Michael Hesemann
forma 2: overall ~15% taller than wide, ~35% as thick as tall; apertural face with almost parallel flanks, boss, thickened and raised sutures, keel
The identification is based upon:
, : Plate , Fig.