none
Geological Time: Quaternary Holocene recent
the drawings are published in the book cited below, author and collection:
View of a specimen of Biloculinella globulus (Bornemann, 1855)
The identification is based upon:
Cushman, J., A., 1917: A Monograph of the Foraminifera of the North Pacific Ocean. Part VI. Miliolidae. Smithsonian Institution United States National Museum Bulletin 71. Plate 31, Fig. 2