none
Geological Time: Quaternary Holocene recent
holotype
View of a specimen of Bigenerina delicatula Cushman & Kellett, 1929
The identification is based upon:
, : Cushman, J. A.; Kellett, B. (1929). Recent Foraminifera from the west coast of South America. Proceedings of the United States National Museum. 75(2796): 1-16. Plate , Fig.