United Kingdom and Ireland UK
Geological Time: Jurassic Upper Jurassic Tithonian
Kimmeridge Clay Formation
the raw material was collected and the specimen was extracted and photographed by
The identification is based upon:
, : Schwager, C. (1865). Beitrag zur Kenntniss der mikroskopischen Fauna jurassischer Schichten. Württembergische naturwissenschaftliche Jahreshefte. 21 (1): 82-151. Plate , Fig.