none
Geological Time: Paleogene Eocene
holotype
View of a specimen of Plectolingulina crassa (Cushman & Bermúdez, 1936)
The identification is based upon:
, : Cushman, J. A.; Bermúdez, P. J. (1936). The foraminiferal genus Amphimorphiva in the Eocene of Cuba. Contributions from the Cushman laboratory for foraminiferal research. 12(1): 1-3. Plate , Fig.