Cushman, J. A.; Deaderick, W. H. (1942). Cretaceous Foraminifera from the Brownstown Marl of Arkansas. Contributions from the Cushman laboratory for foraminiferal research. 18(3): 50-66.
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Cushman, J. A.; Deaderick, W. H.
1942
Cretaceous Foraminifera from the Brownstown Marl of Arkansas.
Contributions from the Cushman laboratory for foraminiferal research