none
Geological Time: Paleogene Eocene
holotype
View of a specimen of Cibicides yazooensis Cushman, 1931
The identification is based upon:
, : Cushman, J. A. (1931). Three new Upper Eocene Foraminifera. Contributions from the Cushman Laboratory for Foraminiferal Research. 7(3): 58-59. Plate , Fig.