INDEX. 



137 



Pago. 



Tinoceras. See Uintatheriuin. 



Titanotheriidffi 25,41, 



43, 4G, 48, 52, 54, 57, 60, 61 , 95, 98, 99, 102, 104, 1 1 1 



Titanotherium 61,62,111 



helocerus 104 



ingens 104 



prouti 104 



trigonoceras 104 



Titanotherium zone, fauna of 60-61,103-104 



homotaxis of 22,60 



figure showing 23,62,64,65 



Tomarctus 118 



brevirostris 114 



Tongrien etage, homotaxis and fauna of 60-63 



Torrejon formation, fauna of 34-35,91-92 



homotaxis of 22,34-35 



figure showing 23 



Tortonien etage, homotaxis and fauna of . 76-78 



Tricentes 101 



crassicollidens. 91 



subtrigonus 91 



Trigenicus Ill 



mammifer 104 



socialis . 104 



Trigonias Ill 



osborai 104 



sp 104 



Trigonolestes 38,48,103 



brachystomus 95 



chacensis , 95 



metsiaeus . 95 



nuptus 95 



secans 95 



sp 49 



Trigonolestidse 95 



Triisodon 35,101 



gaudrianus 91 



heilprinianus 91 



quivirensis .. 91 



Triisodontidse .. 90, 91, 101 



Tnisodontinse. 33,34 



Trilophodon 78,119 



angustidens - 80 



campester 81,116 



euhypodon 81,116 



floridanus 116 



praecursor 116 



productus 116 



shepardil 120 



Trionyx 47 



Triplopus 102 



amarorura 97 



cubitalis 97 



obliquidens 99 



Tritemnodon 44,45,100 



agilis 96 



whitije 93 



Trogosus 52,97,101 



castoridens 97 



minor. 97 



Twelvemile Creek, Kans., fauna of 88 



U. 



Uinta basin, deposits of 54-57 



fauna of 98-100 



Uinta formation, distribution of, map show- 

 ing 37 



homotaxis of, figures showing 23,56 



Page. 



Uintacyon 03,100 



bathygnathus 96 



edax 96 



massetericus '. 93 



promicrodon. 93 



scotti 98 



vorax. . 96 



sp 96 



Uintatheriidae 42, 45, 52, 57, 94, 97 



Uintatherium 51, 52, 53, 102 



(Tinoceras) affinis 97 



(Dinoceras) agreste 97 



(Tinoceras) anceps 97 



(Tinoceras) annectens. 97 



(Tinoceras) crassifrons 97 



(Tinoceras) grandis 97 



(Tinoceras) hians 97 



(Tinoceras) ingens 97 



(Dinoceras) laticeps 97 



latifrons 97 



leidyanum '. 97 



(Tinoceras) longiceps 97 



(Dinoceras) lucare 97 



(Dinoceras) mirabile 97 



(Tinoceras) pugnax 97 



robustum 97 



spierianum 97 



(Tinoceras) stenops 97 



(Tinoceras) vagans 97 



sp 97 



Uintatherium zone, fauna of 49-54,55-57,95-98 



homotaxis of 22, 42, 49-50, 53, 54-55 



figures showing 23, 51, 53, 55 



Ungulata 35, 40, 42, 46, 52, 54, 57, 61, 84 



United States, map of, showing fossil locali- 

 ties 7 



Upper Brule Creek, S. Dak., fauna of 106-109 



Urocyon 89,90 



Ursidae 64,85,86,89,90 



Ursus 87,88,89,90 



Utah, fauna of 98-100 



formations of, homotaxis of 22 



homotaxis of, figure showing 23 



Vassacyon 100 



promicrodon 93 



Veatch, A. C, on volcanic ash 25 



paper by 12 



Vespertilio 90 



Viverravus 46,100 



dawkinsianus 49,93 



gracilis 96 



minutus 96 



sp 96 



Viverrida^ 64 



Volcanic ash, distribution of 22,24-25 



Volcanoes, prevalence of 24 



Vulpavus 46,52,100 



brevirostris. 93 



canavus 93 



palustris. ". . 96 



sp 93,96 



Vurpes; 89,90 



W. 



Wasatch formation, distribution of, map 



showing 37 



