https://www.usgs.gov/publications/conodont-and-fusulinid-biostratigraphy-and-history-pennsylvanian-lower-permian-keeler
Conodont and fusulinid biostratigraphy and history of the Pennsylvanian to Lower Permian Keeler...
The Pennsylvanian-Lower Permian Keeler Canyon Formation and lower part of the Lower Permian Lone Pine Formation in east-central California were deposited in a...
history of