Index 



Ore deposit, Leona Heights, California, 

 373; metallographic study of, 374; 

 genesis of, 375; relation of fractur- 

 ing to, 377. 



Ore deposits, relationship between ore 

 and garnet zones, 25-37; examples: 

 Washington Camp, Arizona, 26; 

 Silverbell, Arizona, 27; Seven 

 Devils, Idaho, 28; Velardena, 

 Mexico, 29; Dolores Mine, Mexico, 

 31; Mackay, Idaho, 33; White- 

 horse Copper Belt, Yukon, 33. 



Ore Deposits of the Leona Rhyolite, 

 Geology and, 316. 



Oreamnos, 470. 



Oreolagus, 182. 



nevadensis, figure of teeth, 183. 



Orinda, Contra Costa Hills, Calif- 

 ornia, faunal list from, 426. 



Osborn, H. F., cited, 437, 472. 



Ostrea titan corrugata, 306; plates of, 

 319, 321. 



Ovibos, 473. 



Owen, R., cited, 267, 272, 274, 279, 

 280, 283. 



Oxydation products in Crestmore for- 

 mation, 353. 



Pacific Coast, New Fossil Corals from 

 the, 185. 



Pacific Coast, Pliocene mammal faunas 



on, 424, 439; toads on, 289. 

 Pacific Coast and Great Basin Pro- 

 vinces of North America, Rela- 

 tionships of Pliocene Mammalian 

 faunas from, 421. 

 Pack, R. W., cited, 112, 118, 120, 127, 



193, 194, 195, 208, 224, 296, 297. 

 Palaeolagus nevadensis, type species 



of Oreolagus, 182. 

 Palms quartzite, 9. 

 Pararetotherium, 108. 

 Payette Eocene, relation of, to Idaho 



formation, 432. 

 Pecten coalingensis, faunal zone, 216. 

 crassicardo biformatis, 207; plate 



of, 323. 

 deserti, 232: figure of, 243. 

 egregius, 23; figure of, 243. 

 etchegoini, 239; figures of, 245, 247. 

 nutteri, figures of, 245, 247. 

 wattsi, figures of, 245. 

 healeyi, 47, 48, 49. 

 hemphilli, 47. 

 opuntia, 47. 



(Propeamusium) levis, 56; figures of, 

 63. 



proteus, 232; figures of, 243. 

 terminus, figures of, 243. 

 wattsi var. etchegoini, 239. 

 var. morani, 239. 

 Pegmatite, 5, 329; composition of, 330. 

 Percentage method of age determina- 

 tion, limited degree of accuracy of, 

 225. 



Periploma clarki, 307; plate of, 325. 



Persia, Maragha fauna of, 442. 



Pes in Mylodon Harlani, Structure of 



the, 267; tarsus, 268; digits, 272; 



compared with pes of other 



mylodont genera, 278-284. 

 Pessopteryx nisseri, 69. 

 Pessosaurus polaris, figure of anterior 



limb of, 68. 

 Phalarodon, 65. 



Phillips Ranch, California, fauna, 77. 



Phlogopite, 334. 



Picton granite, 11. 



Pilgrim, G. E., cited, 92, 107. 



Pinna bicuneata, 308; plate of, 317. 



Pinole Tuff -Orinda, fauna, 422; list of, 



425; thickness of section, 424. 

 Planops, premaxillaries of, 143. 

 Planopsidae, 139. 

 Platygonus (?), 471. 

 Pleistocene Fauna of Hawver Cave, 



461. 



Pliauchenia, 441. 



Pliocene, Etchegoin. See Etchegoin 

 Pliocene of Middle California. 



Pliocene Bear, An American, 87; oc- 

 currence, 88; dentition, 90; skeletal 

 elements, 97; relationships, 105. 



Pliocene beds: of California, at San 

 Pedro, 48, at Carrizo Creek, 185, 

 near Sargent, 225; of Florida, 226; 

 greatest thickness of, 193, 203, 

 227; stages of, 434; Idaho fauna 

 included in, 434; correlation of 

 deposits, 192; map showing local- 

 ities of, 199. 



Pliocene Mammalian Faunas from the 

 Pacific Coast and Great Basin 

 Provinces of North America, Re- 

 lationships of, 421; new faunas 

 discovered since 1909, 422; outline 

 map of occurrences of, 423; list of: 

 Tulare, Etchegoin, and Pinole Tuff- 

 Orinda, 425; Orinda, 426; Chanac, 

 426 ; sequence of, 427 ; Rattlesnake, 

 428; Thousand Creek, 429; Ric- 

 ardo, 430; referred to Idaho, 432; 

 sequence of, 434; Blanco, 434; 

 Snake Creek, 435; Republican 

 River, 438; sequence of, 438; 

 Alachua, 439; time relationships, 

 439, 443; correlation with Old 

 World faunas, 442. 



Pliohippus, 431, 435, 437, 528; from 

 upper Etchegoin, 195. 

 pro versus zone, 117. 



Porphyry, quartz monzonite, 330. 



Port Kennedy, fauna of, compared with 

 fauna of Hawver Cave, and of 

 Conard fissure, 472. 



Post-granitic division of time, 12. 



Post-Keewatin time, two distinct per- 

 iods of granitic invasion in, 10. 



[548] 



