TY  - RPRT
TI  - The Upper Cretaceous ammonite Watinoceras Warren in the Western Interior of the United States
AU  - William Aubrey Cobban
PY  - 1988
DO  - 10.3133/b1788
UR  - https://pubs.usgs.gov/publication/b1788
ID  - b1788
ER  -