none
Geological Time: Quaternary Holocene recent
holotype
View of a specimen of Glaphyrammina americana (Cushman, 1910)
The identification is based upon:
, : Cushman, J. A. (1910). A monograph of the Foraminifera of the North Pacific Ocean. Part I. Astrorhizidae and Lituolidae. Bulletin of the United States National Museum. 71(1): 1-134. Plate , Fig.