none
Geological Time: Quaternary Pleistocene
holotype
View of a specimen of Bifarinella ryukyuensis Cushman & Hanzawa, 1936
The identification is based upon:
, : Cushman, J. A.; Hanzawa, S. (1936). New genera and species of Foraminifera of the Late Tertiary of the Pacific. Contributions from the Cushman laboratory for foraminiferal research. 12(2): 45-48. Plate , Fig.