Title: Stratigraphy and selected Ordovician brachiopods from the Horseshoe Gulch and Gregg Ranch areas, eastern Klamath Mountains, northern California
Subjects: Brachiopoda, Fossil, Fossil Brachiopoda, Geology, Stratigraphic, Stratigraphic Geology
Places: Klamath Mountains (Calif. and Or.)
Time periods: Ordovician, Paleozoic