Index 



Mangidia muricidea, 55; figures of, 61. 

 Manix Lake, fauna of, 518. 

 Mansfield, G. R., cited, 339, 400. 

 Maragha fauna of Persia, 442. 

 Marine conglomerates, 400. 

 Marine faunas in the Upper Etchegoin, 

 203. 



Marine Triassic Reptile Fauna of 

 Spitzbergen, Notes on the, 63; 



occurrence, 63, 64; Mixosaurus and 

 Phalarodon 65; Pessosaurus and 

 Shastasaurus, 68; Pessopteryx and 

 Omphalosaurus, 69; faunal rela- 

 tionships, 71. 



Mariposa formation, location and 

 topography, 383-384 ; geologic map 

 of, opp. 384; geology of, 386; 

 stratigraphy of, 388; slates of, 389; 

 figure showing slaty cleavage, 390; 

 sandstone 390, figure showing, 

 420; breccia, 391-397; fauna of, 

 398; conglomerates, 399; marine, 

 400, fluviatile, 401, glacial, 402, 

 f agglomerates, 405; faulting in, 

 411; thickness of, 412. 



Mariposa Formation in the Vicinity 

 of Colfax, California, The Brec- 

 cias of the, 383. 



Mariposa-Calaveras unconformity, 406. 



Marquette district, Lake Superior, 

 formation in, 8. 



Marsh, O. C, cited, 285. 



Martin, B., cited, 47, 49, 194, 225. 



Maryland, Miocene of, 226. 



Mascall formation, 427. 



Mastodontine types, 435. 



Matthew, W. D., cited, 129, 272, 277, 

 422, 435, 440, 537. 



Megalonychidae, 139, 151. 



Megalonyx, 258, 275, 283, 471. 473, 

 488, 491; compared with Nothro- 

 therium, 140, 153, 159, 502-513; 

 figure of phalanx of, 490. 

 jeffersoni, 139, 143, 154. 

 leidyi, 139. 

 wheat leyi, 159. 



Megascopic features of breccia, 394. 



Megatherium, compared with Nothro- 

 therium, 143, 145, with Mylodon 

 harlani, 275, with Scelidotherium, 

 281. 



Mellor, E. T., cited, 403. 



Menominee district, Lake Superior, 



formations in, 8. 

 Mephitis occidentalis, 470. 

 Merced formation, fauna of, compared 



with related faunas, 48, 49, 227. 

 Mercer's Cave, Calaveras County, 



California, 467. 

 Merriam, C. H., cited, 483. 

 Merriam, J. C, 87, 111, 129, 255, 421, 



517, 523, 531, 535; cited, 40, 65, 



139, 194, 217, 224, 226, 431, 463, 



484. 



Merychippus, 78, 81, 122. 123. 

 Merychyus, 441. 

 Merycochoerus, 81, 441. 

 Merycodus, 79, 81, 127, 431, 437; 



figures of, 126. 

 Mesabi Range, geologic district in 



Great Lakes region, 6. 

 Mesnard quartzite, 8. 

 Mesaverde formation in Sunshine 



anticlines, Wyoming, 454, 458. 

 Mexico, ore and garnet zones at 



Velardena, 29, at Dolores Mine, 



31. 



Michigamme slate, 10. 



Microlitic facies, Leona rhyolite, 369. 



Microtus, 487. 



californicus, group, 487. 



Miller, L. H., cited, 464. 



Miller, W. G., and Knight, C. W., 

 cited, 13, 14, 16. 



Minerals Associated with the Cry- 

 stalline Limestone at Crestmore, 

 Riverside County, California, 327; 

 description of, 332. See also 

 Chino Hill; Sky Blue Hill; In- 

 trusive rocks. 



Minerals, sulphide, in Crestmore for- 

 mation, 352. 



Miocene formation of Maryland, 226: 

 deposits at Santa Cruz, 282, 284; 

 faunas formerly described as, 421; 

 relation of Idaho formation to, 

 432. 



Miocene Sediments near Tehachapi 

 Pass in the Southern Sierra 

 Nevada, New Mammalian Faunas 

 from, 75. 



Mixosaurus? natans, figures of an- 

 terior limb, 67. 

 nordenskioldi, 65; figure of anterior 

 limb, 67. 



Moira, granite gneiss in southeastern 



Ontario, 11. 

 Mojsisovics, E., cited, 64. 

 Molthan, cited, 130. 

 Mono, Pleistocene lake, 519. 

 Monterey, phase of Miocene, 115. 

 Monticellite, 342; analysis of, 343. 

 Moody, C. L., 39, 87, 388, 445. 

 Moropus, 79. 

 Morotherium, 285. 



Morrison formation, in anticlines of 

 Sunshine, Wyoming, 450. 



Mowry shale, formation, 451; presence 

 of fish scales, teeth, etc., 452; sig- 

 nificance of, 458; descriptions of 

 specimens from, 452; position in 

 Sunshine anticline, 456. 



Murex (Ocinebra) concinna, 236. 

 peritus, 47. 

 tethrys, 236. 



Mya zone, 216. 



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