none
Geological Time: Paleogene Eocene
holotype
View of a specimen of Amphistegina pinarensis Cushman & Bermúdez, 1937
The identification is based upon:
, : Cushman, J. A.; Bermúdez, P. J. (1937). Additional new species of Eocene Foraminifera from Cuba. Contributions from the Cushman laboratory for foraminiferal research. 13(4): 106-110. Plate , Fig.