Midwestern USA USA
Geological Time: Carboniferous Mississippian
the image is from a publication, which is cited in the table descriptions of the below cited book by
View of a specimen of Sorosphaerella cooperensis (Conkin, Conkin and Canis, 1968)
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 24, Fig. 18-19