TY - RPRT TI - Environmental-stratigraphic cross sections of the Cretaceous Fox Hills Sandstone and Hell Creek Formation and Paleocene Fort Union Formation, Richland and Roosevelt Counties, Montana AU - R. M. Flores AU - C.L. Lepp PY - 1983 DO - 10.3133/mf1554 UR - https://pubs.usgs.gov/publication/mf1554 ID - mf1554 ER -