American South USA
Project:
Geological Time: Cretaceous Upper Cretaceous Maastrichtian
Arkadelphia Marl
the specimen is photographed by Dr.
The identification is based upon:
, : Cushman, J. A. (1930). Notes on Upper Cretaceous species of Vaginulina, Flabellina, and Frondicularia from Texas and Arkansas. Contributions from the Cushman Laboratory for Foraminiferal Research. 6(2): 25-38. Plate , Fig.