TY  - RPRT
TI  - Ammonites of Early Cretaceous age (Valanginian and Hauterivian) from the Pacific Coast States
AU  - R. W. Imlay
PY  - 1960
DO  - 10.3133/pp334f
UR  - https://pubs.usgs.gov/publication/pp334F
ID  - pp334F
ER  -