Author:
Gray,J.;Kittleman,L.R.
Year:
1967
Title:
Geochronometry of the Columbia River Basalt and associated floras of eastern Washington and Western Idaho.
Reference:
Gray,J. et al. (1967) Geochronometry of the Columbia River Basalt and associated floras of eastern Washington and Western Idaho. American Journal of Science Vol. 265 # 4 P. 257- 291
Google Academy:
try to search by title in english
Genus Species Country(Region) From To
Pollen Pollen Idaho Early Miocene Early Pliocene