Northern Siberian Plain Russia
Geological Time: Jurassic
the image is from a publication, which is cited in the table descriptions of the below cited book by
The identification is based upon:
Loeblich, A. R., Tappan, H. N., 1987: Foraminiferal genera and their classification. Van Nostrand, Reinhold Co. New York 1728 pp. Plate 430, Fig. 20-23