Title: Paleontology and stratigraphy of the lower Chickabally Mudstone (Barremian-Aptian) in the Ono Quadrangle, northern California
Subjects: Ammonoidea, Geology, Paleontology, Stratigraphic Geology, Paleontology, united states, Geology, stratigraphic, cretaceous, Geology, california
Places: California, Shasta County, Tehama County
Time periods: Cretaceous