TY  - RPRT
TI  - Jurassic (Oxfordian and late Callovian) ammonites from the Western Interior region of the United States
AU  - R. W. Imlay
PY  - 1982
DO  - 10.3133/pp1232
UR  - https://pubs.usgs.gov/publication/pp1232
ID  - pp1232
ER  -