Western Canada and USA USA
Geological Time: Neogene Miocene
classification and image courtesy of
holotype
The identification is based upon:
, : Finger, K. L.; Gaponoff, S. L. (1986). Chilostomina pustolosa n. gen., n. sp. (Chilostomininae, n. subfam., Foraminiferida), from bathyal deposits of the Miocene Monterey Formation, California. The Journal of Foraminiferal Research. 16(1): 36-42. Plate , Fig.