376 



INDEX. 



I 



Page. 



Bythopora 178, 240 



fruticosa 240 



subgracilis 241 



Bythotrypa 100 



Calamopora alveolaris 342 



Calamopora fibrosa 232,313 



Calamopora fibrosa 342 



Calamopora fibrosa tuberosa ramosa 342 



Calamopora polymorpha 342 



reticulata 343 



Callopora 312, 325 



Callopora ampla 329 



dumalis 331 



elegarttula 326, 334 



foordii 214 



goodhuensis 327 



heterosolen 317 



Callopora ligniformis 343 



Callopora multitabulata 326 



nana 334 



nummiformis 335 



Callopora piriformis 343 



punctata 246 



Callopora undulata 332 



Calloporella 178 



Calloporina 178 



Cambrian and Ordovician formations in 



Russia, Table of 6 



Cambrian and Ordovician strata, Table of. . . 7, 8 

 Cambrian-Early Silurian strata of Baltic 



Russia, Composite section of 9 



Cambrian strata, blue clay and associated 



rocks, A 1 10 



Bryozoa in 10 



description of 8 



Ungulite sandstone, A 2. . 10 



Cephalopoda, Listof 21 



Ceramopora 76 



imbricata 76 



intercellata 79 



invenusta 78 



Ceramopora socialis 108 



Ceramopora spongiosa 77 



Ceramoporella 81 



dfetincta 81 



granulosa minor 81 



uxnormensis 82 



Ceramoporidse 74 



Ceriopora bicornis 317 



Ceriopora constellata 219 



Chsetetes annulatus 304 



apkulaius 344 



TiemispTiserkus 253 



heterosolen 317 



petropolitanus 232, 313 



piriformis 343 



Chaetetes rhombicus 92 



Chasmalopora 169 



furcata 171 



reticulata 170 



teuella 169 



Cfteilotrypa Ill 



CMlotrypa Ill 



hispida Ill 



immatura Ill 



cinctosum, Mitoclema 69 



cingulata nodosa, Trematopora...^ 306 



Page. 



cingvMa, Trematopora 306 



Cladopora sedilis 242 



Clathropora flabellata 123 



clavaeformis, Dittopora 302 



clava, Lloclemella 249 



claviformis, Leptotrypa 217 



claviformis, Stigmatella 217 



Clitambonites bed, Bryozoa of 31 



Coeloclema 83 



crassimurale 84 



laciniatus 85 



Cotnites laciniatus 85 



colliculata, Dittopora 306 



colliculata, Trematopora 306 



coUifera, Dianulites 239 



communis, Esthoniopora 259,260 



Composite geologic section, Ordovician of 

 northeastern Iowa and southeastern Min- 

 nesota 25 



Composite section, Cambrian-Early-Silurian 



strata of Baltic Russia 9 



compressa, Petalotrypa 266 



concentrica, Lichenalia 168 



conjunctus, Arthrostylus 147 



Constellaria 178, 218 



varia 219 



Constellariidse 178, 218 



constellata, Ceriopora 219 



Stellipora 223 



consueta, Nematopora. 155 



Correlations, stratigraphic 36 



Corynotrypa 61 



abrupta 65 



barberi 63 



delicatula 61 



dissimllis 68 



inflata 64 



schucherti 67 



Coscinium 145 



Cyclops 145 



prsenuntium 146 



Oiscinium proavium 123 



proavus 123 



Coscinotrypa 145 



crassimurale, Coeloclema 84 



crenulata, Stigmatella 211 



Crepipora 85 



Crepipora impolita 97 



Crepipora incrassata 89 



lunatifera 88 



schmidti 87 



simulans 86 



cribrosa, Homotrypella 192 



cribrosa, Stictoporella 123 



cribrosa, Stictoporella 128 



Crisinella ailensls 73 



Cryptostomata 112 



Ctenodonta bed, Bryozoa of 29 



Ctenostomata 54 



cumulata, Monotrypa ( Chaetetes) 232 



curvata, Esthoniopora 263 



Homotrypa 185 



Cyclops, Coscinium 145 



Cyclostomata 58 



cyclostomoides, Micropora 141 



cyclostomoides, Pachydictya 141 



Cyphotrypa 178 



