TY  - RPRT
TI  - Contributions to Late Cretaceous stratigraphy and paleontology, western Montana
AU  - T. S. Dyman
AU  - J. C. Haley
AU  - W. J. Perry
AU  - R. G. Tysdal
AU  - D. J. Nichols
AU  - W. A. Cobban
PY  - 1991
DO  - 10.3133/b1962
UR  - https://pubs.usgs.gov/publication/b1962
ID  - b1962
ER  -