Geological Time: Quaternary Holocene recent
the image is published in the source mentioned below
View of a specimen of Acostina piramidale (Acosta, 1940)
The identification is based upon:
, : Acosta, J. T. (1940). Algunos foraminiferos nuevos de las costas Cubanas. Torreia, Museo Poey, Universidad de la Habana, Cuba. 5: 3-6. Plate , Fig.