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Sisquoc formation and Careaga sandstone: burrows extending from base of Cebada fine- grained member of Careaga sandstone into Sisquoc formation, near Union Oil Co., Squires No. 18 well, Orcutt field. Santa Barbara County, California. Circa 1939. Figure 6-C, in U.S.Geological Survey Professional paper 222. 1950.
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Neverita and Pecten zones of San Joaquin formation: View on west flank of South Dome looking northward from south line of sec. 20, T. 24 S., R. 19 E. The narrow white band marks the outcrop of thin bed of limestone immediately underlying the Pecten zone. Kings County, California. 1930. Plate 18-C, U.S.Geological Survey Professional paper 195. 1940.