Index. 



dltcfcrences to descriptions of species are indicated by figures in full-faced type.] 



A. 



Page. 



Acantboceras? kanabense 35, 181 



Actaeon 101 



propinquus 29, 161 



subellipticus 162 



Adruote 



gregaria 153, 1 GO 



rbomboides 158 



subfusi formis 159 



Admetopsis 158 



humerosa 100 



rbomboides 36, 39, 158 



subfosiformis 39, ! 59 



Ampullina bulbilbrniis 137 



Amauropsis 137 



alveaca L37 



bulbiformis 28,29,50, l.'J7 



utabensis :!9, 1 88 



Ammonites 



bravaisianus 174. 



carolinus 50, 174 



germari 50, 172 



graysonensis 48, 17<i 



loevianus 178 



meekianus 48, 176 



mullananus 187 



nodosoides 50, 178 



percarinatus •- 174 



placenta 169 



serratocarinatus 171 



swallovi 168 



vermiliouse 180 



vespertinus 48, 170 



woolgari 50, 174 



Anatina 117 



lineata 28,29,40,47,117 



sulcatina 117 



Ancbura 145 



americana 14, 146 



fusiformis 144, 148 



newberryi 148 



nuptialis 147 



prolabiata 35 



(Drepanocbeilus) prolabiata 35. 144 



(Drepanocbeilus) ruida 35, 145 



Ancyloceras annulatus 48, L64 



Anisomy on 14,20 



Page. 



Anomia 66 



concentrica 67 



grypborlivnchiis 67 



micronema 68 



nitida 66 



obliqua 49, 68 



propatoris 41, 42, 47, 67 



subqnadrata 29, 50, 66 



truncata 50, 67 



Aporrhais 143 



occidentalia 145 



parkinsoni 144, 148 



reussi 144 



scblotbeimi 1 44, 148 



(Perissoptera?) prolabiata 144 



(Goniocheila) castorensis 143 



Area? coal villensis 89 



Arkansas valley, Colorado, Cretaceous sec- 

 tion in 27 



list of fossils from 28 



Avicula 72 



caudigera 50, 72 



gastrodes 29. 37, 48, 50, 72 



lingniformis 73 



(Oxy toma) erecta 72 



(Paeudoptera) propleura 74 



(Pseudoptera) rliy topbora 74 



B. 



Baculi tea 166 



anceps .22, 167 



asper 25, 47, 48, 51, 167 



baculoides 167 



bobemicus 50 



gracilis 32, 3b, 35 48, 50, 166 



incurvatns 51, 168 



ovatus 43, 166 



Barbatia 89 



coalvillensis 89 



micronema 36, 39, 44, 47, 89 



Bear River formation, position of 15, 45 



section of 45 



Belemnitella manitobensis 49 



Black Hills of Dakota. Cretaceous section 



in 23 



283 



