Figure 1 in Nucella demouthae, A New Species of Late Miocene Muricid Gastropod From Northern California, U.S.A.

Figure 1. Index map (A) and stratigraphic column (B) showing the geology of Bloomfield Quarry, Sonoma County, California. California Academy of Sciences, Geology (CASG) fossil localities 54135, 54136, and 57867 are shown. Mrt, informally named Roblar tuff of Sarna-Wojcicki (1992); Ma, megaannum or millions of years ago. After Powell et al. (2019), courtesy of James Allen