none
Geological Time: Carboniferous Pennsylvanian Middle Pennsylvanian
holotype
View of a specimen of Ammobaculites compressa Cushman & Waters, 1927
The identification is based upon:
, : Cushman, J. A.; Waters, J. A. (1927). Pennsylvanian Foraminifera from Michigan. Contributions from the Cushman Laboratory for Foraminiferal Research. 3(2): 107-110. Plate , Fig.