612 



AGE OF MAMMALS 



Davidson, 



loess formation, 386. 



Davis, 



geology of Bridger and Washakie, 158 ; 

 fluviatile vs. lacustrine origin of bad- 

 lands, 205. 



Dawkins, Boyd, 



southward retreat of monkeys in Plio- 

 cene of Europe, .320 ; Pleistocene rhi- 

 noceroses, 390 ; Forest Bed mammals, 

 392, 393, 394, 395 ; early Pleistocene of 

 France, 395, 396. 



Debruge lignites, 145. 



Decticadapis, 



Landenian, 100 ; Ypresian, 118. 



Deep River formation, 281, 288, 289 ; 

 location, 86, 87 ; correlation, 41, 249, 

 277. 



Dclphinus, 317, 562.* 



Dcltnthcrium, 111, 526.* 



Depeuet, 



correlation of mammal-bearing forma- 

 tions of Europe, 51 ; Basal Eocene 

 formations of Europe, 99, 100 ; first 

 appearance of Coryphodon and Hyra- 

 cotherium, 111 ; Eocene formations of 

 Europe, 113, 117, 143, 144, 145; Propa- 

 chynolophus gaudryi, 118 ; Oligocene 

 formations of Europe, 186, 187, 190, 

 191, 194; Stampian fauna, 192; Pyri- 

 mont deposit, 193 ; Miocene formations 

 of Europe, 244, 250, 256, 258, 263, 267 ; 

 Vindobonian mammals, 256, 260, 261 ; 

 Mont Leberon, Croix Rousse, Montre- 

 don, 269 ; Pliocene flora and climate, 

 306, 307 ; Pliocene formations of Eu- 

 rope, 312, 314, 318 ; Pliocene fauna of 

 Europe, 307, 311, 313, 314, 317, 318, 319. 



Deshayes, 



on geologic time divisions, 40, 41. 



Desmathyus, 



Promerycochoerus zone, 236 ; Mery- 

 cochnerus zone, 286 ; 549.* 



Desmatotherium, 557.* 



Desmostylus, 344, 394, 559.* 



Diacodon, 125. 



Diadiaphorus, 561.* 



Dibelodon, 558.* 



(See also Tetralophodon.) 



Dicer atherium, 



place of origin, 180 ; zone, 182, 227, 228, 

 229, 230, (photograph) 229 ; minutum of 

 Stampian, 190, 193 ; Aquitanian, 198 ; 

 Upper Oligocene, American, 224 ; John 

 Day, 230 ; Promerycochoerus zone, 

 233, 235 ; decline, 247, 251 ; phylum, 

 272 ; last American, 287 ; 557.* 



Dicerorhinus, 252 ; 



phylum enters Europe, 247, 248 ; tagi- 

 cus of Burdigalian, 252, 255 ; sansani- 

 ensis of Vindobonian, 255, 259 ; simor- 

 rensis of Vindobonian, 260, 262 ; schleier- 

 macheri of Pontian, 269 ; phylogeny of 

 phylum, 272 ; Coralline cVag, 312 ; 



leptorhinus, 315 ; etruscus, 318, 320, 390, 

 392, 396, 399 ; platyrhinus of Siwaliks, 

 327 ; of China, 334 ; me'jdrhinus 

 {merckii), 390, 396, 400, 402, 403, 404, 

 405, 406, (characters) 408; 558.* 



Diceros, 



bicornis (source of), 71 ; first appearance 

 in Europe, 264, 421 ; phylum, 272 ; 

 antiquilatis (tichorhinus), 390, 412, 421, 

 (restoration) 421, (skull figured) 425 ; 

 simus (skull figured), 425 ; mauritanicus 

 and suhincrmis of North Africa, 431 ; 

 558.* 



Dichohune, 547.* 



Dichobunidse, 



Ypresian, 117; later Eocene, 147, 170; 

 547.* 



Dichodon, 548.* 



(See also Dacrytherium.) 



Dichodontinae, 147, 548.* 



Dicotylcs, ATI, 549.* 



DicotylidsB, 



affinity to Doliochaerus, 198 ; lower 

 White River, 213, 214 ; Oreodon zone, 

 223 ; John Day, 231 ; Promerycochoerus 

 zone, 232, 236 ; affinities to Chceromorus 

 phylum, 260 ; Merycochoerus zone, 286 ; 

 Hipparion zone, 301 ; 549.* 



Dicrocerus, 



affinities, 249 ; Burdigalian, 253 ; Vin- 

 dobonian, 259, 262 ; outline restoration^ 

 262 ; Pontian, 269 ; 551.* 



Didelphodus, 



W^asatch, 125 ; Wind River, 133. 



Didelphops, 515.* 



Didelphyidse, 



pre-Pliocene of South America, 79 ; 

 Wasatch times, 124 ; Wind River, 133 ; 

 Ludian, 146 ; Sannoisian, 189 ; dis- 

 appear in Europe, 194. 



Didelphys, 



Cypress Hills, 216 ; Ashley River, 472 ; 

 516.* 



Didolodus, 546.* 



Didymictis, 



Torrejon, 108, 111; Wasatch, 127; 

 Wind River, 134 ; 528.* 



Digital reduction, law of, 13, 14, 15. 



Dimylus, 521.* 



Dinictis, 



lower White River, 214, 216 ; Oreodoa 

 zone, 222 ; restorations, 223, 225 ; 

 phylum, 230 ; 532.* 



Dinoceras, 547.* 



(See also Uintatheriuni.) 



Dinocerata, 



first appearance, 163 ; Washakie, 166 ; 

 causes of extinction, 172. 



Dinocynops, 529.* 



Dinocyon, 249 ; 



Vindobonian, 261 ; Pontian, 269 ; Clar- 

 endon, 302 ; Equuszone ( ?), 454 ; 529.* 



Dinohyus, 



skeleton figured, 187 ; restoration, 192, 



* Reference to classification. 



