fossils, 34 species still living. At the arch point on east end Pliocene bluff capped unconformably by lower San Pedro. "Miocene" fossils reported are all from a Pliocene stratum unconformable on Miocene. Arnold p. 225. Pliocene - many species now live only in colder water to north. 17.3 % of fauna now extinct. Arnold pp15-16. 87 spp Pliocene on Deadman Isl., of which 55 now live at San Pedro, 16 only north, none only south, 15 extinct, 1 doubtful. Lower San Pedro- a stratum 4 to 10 feet thick on W side, 20 ft on E side filled with fossils. Many of the species not found in Pliocene. 247 spp in lower San Pedro of Deadman Isl., 158 now live at San Pedro, 43 only N of San Pedro, 8 only S of San Pedro, 31 extinct, 7 doubtful habitat. This also northern fauna. Upper San Pedro of Deadman Isl. 134 spp. Not as many as at San Pedro.
Post-Pleistocene
Kitchen middens at Deadman Isl., San Pedro, Santa Barbara etc.
