122 



INDEX. 



Page. 



ABtilocapridae 77,86,114,115,118,120 



Apatemyidae 96,101 



Apatemys 101 



beUulus 96 



beUus 96 



Aphelops 78,81,119 



brachyodus 116 



ceratorhinus 80,116 



jemezanus 116 



malacorhinus 81, 116 



megalodus 114 



oregonensis 114 



planiceps 114 



profectus .' 114 



Aplodontiidae 107,110,119 



Apternodus 110 



mediaevus 103 



Aquitanien etage, homotaxis and fauna of. . . G7-75 



Aralia 78 



Archaelurus 68 



Archaeohippus 78,119 



ultimus 115 



sp 115 



Archaic mammals, elimination of 35 



orders of 33 



Archer, Fla., famia at 115-118 



Arctocyonidae 33, 34, 35, 40, 42, 45, 91, 93, 100 



Arctomys ' 90 



Arctoryctes 75,118 



terrenus 112 



Arctotherium 87,89 



Arikaree formation, correlation of 71 



fauna of '. 70-75, 112-114, 115-118 



homotaxis of 70-75 



figure showing 70,72 



Arretotherium Ill 



acridens 109 



Artiodactyla 33, 36, 38, 40, 42, 52, 54, 55, 56, 57, 58, 



59, 60, 61, 62, 68, 64, 66, 68. 69, 73, 74, 75, 77, 80, 

 81, 83, 85, 86, 88-89,90,95,98,99-100,103, 104, 

 106, 108-109, 111, lia-114, 115, 117-118, 119, 120 



Arvicola 85 



Astien etage, homotaxis and fauna of 82-83 



B. 



Banding, occurrence of 27-28 



Bartonien etage, homotaxis and fauna of 50-57 



Bassariscus 89 



Bathygenys Ill 



alpha 104 



Bathyopsis 44, 45, 47, 102 



fissidens 94 



Bathyopsis zone, fauna of 43-48,92-95 



homotaxis of 43, 48 



figure showing 44 



Beds, use of term 7 



Beede, J. W., and Haworth, E., paper by 17 



Bibliography of western Cenozoic horizons. . . 9-18 

 Bighorn Basin, Wyo., fauna of 42,92-95 



sections of, figures showing 23,38 



Bison 87,89 



occiden talis 88 



Blacktail Deer Creek, Mont., fauna of 106-109 



Blanco formation, fauna of 82-83, 120 



homotaxis of 82-83 



figure showing 82 



Page. 



Blarina 90 



Blastomeryx 70, 72, 74, 75, 80, 81, 120 



ad vena 120 



gemmifer 115 



wellsi 118 



sp 114 



Bolodontidae 91,100 



Boochoerus 108 



Borophagus 80,83,86 



diversidens 120 



Bovidae 85,86,88,89,90 



Bovinae 86 



Bozeman lake beds, character of 24 



Brachyprotoma 90 



Brachypsalis 74,80,118 



pachycephalus 116 



simplicidens 112 



Bridger Basin, Wyo., section of, figure show- 

 ing 23 



Bridger formation, character of 25-26 



distribution of, map showing 37 



fauna of 50-53,95-100 



homotaxis of 50-53 



figures showing 23,39,51 



Brontotheriidae 95,98,100,104,111 



Brontotherium Ill 



bucco 104 



curtum 104 



dolichoceras 104 



gigas 104 



hypoceras 104 



leidyi 104 



platyceras 104 



ramosum 104 



Brown, Bamum, on Port Keimedy cave 



fauna 87 



Brule clay, distribution of, plates showing. . . 7, 60 



fauna of 62-68,105-109 



homotaxis of 62-68 



figures showing 62,64 



Buffalo basin, deposits of 41 



Bunslurus 63,110 



infelix 103 



lagophagus 105 



Bunodonta 52 



Bunomeryx 103 



elegans 99 



montanus 99 



Burdigalien etage, homotaxis and fauna of. . . 70-75 



C. 



Cadurcotherium 62 



Caenopus 111,119 



annectens 108 



copei 105 



mitis 104 



occidentalis 105 



pacificus 108 



persistens 114 



platycephalus 104,108 



simplicidens 105 



tridactylus 108 



truquianus 108 



tubifer 108 



sp 104 



