Paleoenvironmental distribution of Paleocene palynomorph assemblages from brachish water deposits in the Ludlow, Slope and Cannonball Formations, southwestern North Dakota.
Reference:
Kroeger,T.J. et al. (1997)
Paleoenvironmental distribution of Paleocene palynomorph assemblages from brachish water deposits in the Ludlow, Slope and Cannonball Formations, southwestern North Dakota. Contributions To Geology
Vol. 32 # 1 P. 115- 129