none
Geological Time: Paleogene Eocene
holotype
View of a specimen of Nuttallides crassaformis (Cushman & Siegfus, 1935)
The identification is based upon:
, : Cushman, J. A.; Siegfus, S. S. (1935). New species of Foraminifera from the Kreyenhagen Shale of Fresno County, California. Contributions from the Cushman laboratory for foraminiferal research. 11(4): 90-95. Plate , Fig.