TY  - RPRT
TI  - Chronostratigraphic and depositional sequences of the Fort Union formation (Paleocene), Williston Basin, North Dakota, South Dakota, and Montana
AU  - Peter D. Warwick
AU  - Romeo M. Flores
AU  - Douglas J. Nichols
AU  - Edward C. Murphy
PY  - 2004
DO  - 10.1306/st51982c6
UR  - https://pubs.usgs.gov/publication/70195447
ID  - 70195447
ER  -