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. (1937). Some notes on Cretaceous species of Marginulina. Contributions from the Cushman laboratory for foraminiferal research. 13(4): 91-99. Plate , Fig.