Ingle, J. C. (1979): The Humboldt (Eel River) Basin of northern California; a high latitude Pacific Neogene reference section. [Pacific Science Congress], International, In: Shilo, N. A. (editor), XIV Pacific science congress; Stratigraphy and paleobiogeography of the Pacific ring's Cenozoic, 65-67, georefid:1980-026630