none
Geological Time: Paleogene Eocene
holotype
View of a specimen of Bitubulogenerina montgomeryensis Howe, 1934
The identification is based upon:
, : Howe, H. V. (1934). Bitubulogenerina, a Tertiary new genus of Foraminifera. Journal of Paleontology. 8: 417-421. Plate , Fig.