TY  - RPRT
TI  - New and little-known ammonites from the Upper Cretaceous (Cenomanian and Turonian) of the western interior of the United States
AU  - William Aubrey Cobban
PY  - 1971
DO  - 10.3133/pp699
UR  - https://pubs.usgs.gov/publication/pp699
ID  - pp699
ER  -