TY  - RPRT
TI  - Jurassic (Bathonian and Callovian) ammonites in eastern Oregon and western Idaho
AU  - Ralph Willard Imlay
PY  - 1981
DO  - 10.3133/pp1142
UR  - https://pubs.usgs.gov/publication/pp1142
ID  - pp1142
ER  -