Index 



Potter Creek cave, California, 165, 

 386. 



Pre-Francisean rocks, 58. 

 Prichard, H. H., 3. 

 Princeton University Museum, 5. 

 Prison Hill, 94. 



Probassariscus, 206, 207, 209, 246. 

 antiquus, 248. 



matthewi, 205, 213, 246, 247, 248. 

 Proboscidea, 271. 

 Proboscidean bones, 369. 

 Procamelus, 168, 169. 

 Procyonidae, 246. 



Prosthennops, 211, 213, 214, 272, 273, 

 275. 



crassigenis, 274, 275. 

 Protohippus, 207, 208, 221, 262, 265. 

 Ptychites, 318. 

 Pueblo Eange, 24, 26. 

 Pueblo Range series, 29, 224. 

 Pugnellus manubriatus, 172. 

 Purisima formation, 70; conformabil- 



ity of, 70; thickness, 1500 feet, 



70. 



Purpura, 68, 71. 



canaliculata, 71. 

 Pygopodes, 82, 83. 

 Quartz-diorite, 59. 

 Querquedula cyanoptera, 82. 



discors, 82. 

 Eailroad Ridge, 43, 47, 213. 

 Rancho La Brea, 85, 392. 

 Rattlesnake beds, eastern Oregon, 228, 

 243. 



Rattlesnake Creek, Oregon, 242. 

 Red Rock Canon, California, 341, 354. 

 Reid, John A., 22, 89; editor's note 



regarding, 89. 

 Reptilia, of Thousand Creek beds, 211, 



214, 233; of Virgin Valley beds, 



205, 214. 

 Rhinoceros, 230. 

 Rhinoeerotidae, 266. 

 Rhyolite, 100; important member of 



Volcanic group, 99. 

 Ricardo, California, 341. 

 River gravels, 97; Tertiary, 133. 

 Rodentia, of Thousand Creek beds, 



211, 214; of Virgin Valley beds, 



205, 214, 252. 

 Rosamond series, 167, 339, pi. 35 opp. 



p. 342, pi. 36 opp. p. 344, pi. 37 



opp. p. 346, pi. 38 opp. p. 348, pi. 



39 opp. p. 352, pi. 40 opp. p. 356, 



pi. 42 opp. p. 370, pi. 43 opp. p. 



372; deformation of, 360, 367. 

 Sailor Canon formation, 95. 

 Sampson, J. A., 334. 



Samwel Cave, California, 386. 



San Andreas fault, 65. 



San Andreas rift, 59. 



San Bernardino Range, basement 

 rocks, 337. 



San Pablo formation, 65; conglomer- 

 ates in, 66; basal conglomerates, 

 67; general features, 68; oil seep- 

 ages in, 67; section of, 69; thick- 

 ness (maximum), 1200 feet, 65. 



San Pablo series, 57; unconformable 

 relation to the Miocene, 57. 



Sand, in geologic formations of Sar- 

 gent 's oil field, 78. 



Sandstone, glaueonitic, 172; azure 

 blue, 65. 



Santa Clara formation, 72. 



Santa Margarita formation, 65, 69. 



Sarcorhamphus, 5, 6, 11, 15, 16, 19, 

 390. 



clarki, 8, 9, 11, 12, 13, 15, 16, 17. 



gryphus 8, 11, 12, 18, 19. 

 Sargent oil field, geology of, 55. 

 Scalaria, 176 



Scapanus, 213, 214, 219, 235. 

 Schists, 94. 



Schuffeldt, R. W., 79, 81. 

 Sciuridae, 253. 



Scotiaptex nebulosa, 393, 394, 395. 

 Scott, W. B., 251. 



Sequoia, stumps in river gravels, 72. 

 Serpentine, 61. 



Shale, in geologic formations of Sar- 

 gent 's oil field, 77. 



Shasta-Chico rocks, absence of, 57. 



Shale, Monterey, 63; analysis of, 64; 

 faulting of, 65. 



Shaler, N. S., 361. 



Shasta caves, California, 393. 



Shastasaurus, 324, 325, 326. 



Shufeldt, R. W., 396. 



Siebert lake beds, 378. 



Sierran batholith, 91; roof of, 92, 97, 

 109. 



Sierra Nevada, volcanics in, 99. 



Siestan formation, California, 232. 



Silver Lake, Oregon, 79. 



Sinclair, W. J., 5, 386, 393. 



Sing-ats-e Range, 141. 



Siphonalia lineata, 174, 176. 



Slide Mountain, 108, 109, 137; fault 



bounding, 133; growth of, 148; 



structural position, 133. 

 Smith, Felix T., 22, 257. 

 Smith, II. J., 355. 

 Smith Valley, 141. 

 Smith-Woodward, A., 306, 312. 

 Snake Creek beds, Nebraska, 206, 246, 



280. 



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