TY  - RPRT
TI  - Cenozoic mammal horizons of western North America, with faunal lists of the Tertiary Mammalia of the West
AU  - Henry Fairfield Osborn
AU  - William Diller Matthew
PY  - 1909
DO  - 10.3133/b361
UR  - https://pubs.usgs.gov/publication/b361
ID  - b361
ER  -