686 



INDEX 



Monte Hermoso age and 

 stage, 20, 129, 226, 479, 

 499, 508, 634 



Moose, 4, 65, 141, 151, 156 

 (fig.), 181, 202, 208, 411, 

 412, 413 



Moraine, Great Terminal, 

 131 



Moraines, 25 



^Moropua, 238, 240 (res- 

 toration, 291, 356 (manus 

 fig.) 



■fMorphipprus, 462 



Moschus, 412 



Mt. Hood, 121; Kenya, 

 134 ; Tacoma, 121 



Mountain Lion, 153, 168 



(fig.) 



Mountain ranges, as 

 barriers to mammals, 

 142; history of, 23 



Mouse, Jumping, 153, 160 



(fig-) 



Mouse-Deer, 54, 60, 358, 

 408. (See oZso Chevrotains 

 and Tragulina) 



tMultituberculata, 642 



Mummies of Pleistocene 

 rodents, 40 



Muntjac, Indian, 412 



Muntjaes, 412, 414, 658 



Musk-Or, 148, 149 (fig.) 

 202, 207, 211, 418 



Musk-Oxen, 27, 141, 208, 

 210 



Muskrat, 2, 151, 153, 182 



Mustela, 159 (fig.), 160 

 (fig.), 517 



Mustelidae, 174, 222, 265, 

 517, 518, 550, 553, 554; 

 John Day, 249; Mio- 

 cene, 238, 551; Old 

 World origin, 550 ; Pleis- 

 tocene, 551 ; Pleisto., 

 S. Amer., 213; Plio- 

 cene, 223, 551; South 

 American, 552 ; White 

 River, 254, 551 



MusteUnes, see Mustelidee 



Mutation; 662 



Mycetes, 585 



tMylagaulid», 222, 229, 

 233 



tMylagaulids, see fMyla- 



fMylodon, 206, 212 (res- 

 toration), 219, 592, 597, 

 601, 602, 603 (restora- 

 tion), 604, 607, 608 (pes 

 fig.) 



tMylodontidse, 206, 592, 

 598, 602 ; Deseado, 610 ; 

 Santa Cruz, 605, 607, 

 609 



tMylodonts, see tMylo- 

 dontidse 



Myocastor, 184 



My odea, 153 



Myrmecophaga, 91, 187, 



188 (fig.), 206, 355, 591, 



600 

 MyrmecophagidsB, 591 

 Mystacoceti, 60 



Noma, 162, 176, 213, 617, 

 546, 552 



Nasuas, 141 



Navicular, 88 



Navidad formation, 124 



tNeorolestidse, 245 



\Nematherium, 592, 607 



Neogsea, 145 



Neogaeic realm, 146, 164 



fNeohipparion, 33, 291, 

 298 (restoration), 299 

 (skeleton fig.) 



fNeoplagiaulax, 627 



Neotoma, 153, 164 



^Neotragoceriis, 362 



Neotropical region, 146, 

 147, 164, 170 (map), 

 322, 363, 418, 436, 461, 

 552, 583, 591, 630 



^Nesodon, 243 (restora- 

 tion), 462, 467 (skull 

 fig.) , 470 (restoration) , 

 473 (pes fig.), 474, 475, 

 478, 482, 483, 498, 510, 

 511 



Neumatb, M., 663 



New Guinea, 634 



New York Zoological So- 

 ciety, 148, 149, 150, 

 151, 152, 154-169, 176- 

 180, 182, 183, 186, 188, 

 189, 190, 292, 389, 584 



Newfoundland, Pliocene, 

 125 



NewZealand,284; Miocene, 

 123 



Nicaragua, 218 



^Nimramis, 249, 541, 542 

 (skull fig.), 543 



Nomenclature, 50 



North America, the cir- 

 cumpolar area, 148 ; 

 mammals of, 145 ; zod- 

 logical divisions, 146, 147 

 (map) 



■Notharctidae, 578 

 Notharctus, 578, 579 

 Nothocyon, 530 

 Nothrotherium, 592 

 Notohippidse, 262, 462, 

 475 



Notohippus, 462, 476 



Notopithecidse, 462 



fNotopithecus, 462 



fNotostylopidte, 282, 462, 

 486 



■\:Notostylops, 462 



Notostylops Beds, 20, 281 



Notoungulata, 461, 489 



Nova Scotia, Pliocene, 125 



Nyctipithems, 578, 686 



Oaks, 102 



Ocelot, 176 (fig.), 212, 552 



Ochotona, 153 



Ofitodon, 184 



Octodontidae, 184 



'fOctodontherium, 262 



Odocoileus, 95 (molar fig.), 

 153, 162, 202, 208, 360 

 (molar fig.), 362, 413; 

 O. hemiorms, 46 (fawns 

 fig.), 167 (fig.); O. vir- 

 ginianus, 166 (fig.), 179, 

 412 ; O. virg. osceola, 179 

 (fig.) 



Odontoceti, 60 



Okapi, 45 



Old World, 101, 258, 266, 

 295, 327, 331, 332, 335, 

 341, 351, 353, 358, 386, 

 390, 413, 420, 426, 518, 

 550, 554, 558, 562, 583; 

 camels, 138 ; horses, 201 ; 

 mammals, 120, 121, 142; 

 separation from N. A., 

 146 



fOligobunis, 517, 551 



Oligocene epoch, 17 ; 

 Europe, 324, 352, 370, 

 543, 552, 661; North 

 America, 113, 114 (map), 

 204, 224, 265, 287, 378, 

 576, 658 ; South 



America, 20, 117, 282, 

 456, 485, 508, 512, 625 



fOmomys, 578 



iOnohippidium,, 307 



Ontogeny, 648 



■[Oodectes, 555, 558 



Opossum, 161 (fig.), 627; 

 Water-, 627, 631 



Opossum-like forms, Cre- 

 taceous, 638 



Opossums, 2, 58, 59, 141, 

 161, 249, 626, 627, 630; 

 Araucanian, 226 ; Bridg- 

 er, 268 ; Casa Mayor, 

 282 ; Cretaceous, 631 ; 

 Eocene, 631 ; European, 

 631 ; North American, 

 631 ; Oligocene, 631 ; 

 Paleocene, 631 ; Par- 

 and, 227 ; Pleistocene, 

 221; Santa Cruz, 244; 

 South American, 190, 

 221, 631; White River, 

 251; Wind River, 274; 

 woolly, 631 



Opsiceros, 327, 329, 330, 

 332, 350, 351 



Orders, distribution of, 138 



Ordovician period, 15 



Oreamnos, 152, 158 (fig.), 

 202, 416 



iOreodon, 379 



fOreodont, White River, 

 252 (restoration), 259 

 (do.), 536 (do.) 



tOreodontidffi, 250, 361 , 372, 

 383, 384, 385, 404, 436, 

 652, 661; Eocene, 372, 

 381 ; grazing, 232 ; John 



