INDEX 



371 



Coelacanthidae, Agassiz on, 243, 244 



characters of family, 21$ 

 Coelacanthus, characters of genus, 2- f /6 



geological range of, 242 

 Coelacanthus exiguus, 253, 254 

 granulatus, 248 

 granulosus, 245 

 huxleyi, 250 

 kayseri, 246 

 welleri, 2.'/7 

 Coelolepidae, 69 

 classification of, 55 

 relations of, 160 

 Coelolepis, shagreen granules of, 276 

 Colfax, Iowa, mineral water from, 27 

 Colorado, fish remains from, 75, 94, 



110, 119, 239, 285-289 

 "Columbia", 94 

 Columbus, Ohio, fish remains from, 108, 



276, 278 

 Columbus limestone, Ohio, fish remains 

 from, 107, 108, 114, 124, 143, 146, 

 175, 240, 276-279 

 Combes, Paul, and Meunier, S., cited, 



266 

 "Conchifrage" dentition, 180, 217 

 Conchodus, 234 



characters of genus, 227 

 relations of, to Dipterus, 231 

 to Synthetodus, 229 

 Conchodus ostraeformis, 228 

 plicatus, 234 



variabilis, 213, 228, 230, 286 

 Concrete, stone for, production of, 23, 



24 

 Concrete, use of gravels in, 7, 26 

 Cope, B. D., cited, 53, 71, 84, 92, 100, 



158, 168, 170, 173, 175, 186 

 Copulation among sharks, 97 

 Cornell College, Iowa, fish remains in 



museum of, 279 

 Corniferous beds, fish remains in, 100, 



124, 141, 142, 149, 175, 199, 276 

 Cortland county, New York, fish re- 

 mains from, 143 

 Cranium, structure of, in classification, 



65 

 Cretaceous, fish remains from, 64, 241, 



246 

 Cross, Whitman, cited, 110 



Crossopterygii, 68, 69 



advent of, 62 



ancestral to amphibians, 237 



characters of order, 237 



evolution of, 237 



in Iowa Devonian, 48 



list of, 276, 280, 285, 287, 288, 290 



relations to Dipnoans, 237 



remains of, 236 



resemblances to Labyrinthodonts, 63 

 Crushed stone, production of, 23, 24 

 Ctenacanthus, characters of genus, l.ji 



post-Devonian species, 155 

 Ctenacanthus acutus, 156 



angulatus, 156 



brevis, 155 



{1)burlingtonensis, 156 



canaliratus, 156 



chemungensis, 15b, 287 



clarki, 155, 283 



compressus, 283 



costatus, 156 



coxianus, 156 



cylindricus, 156 



decussatus, 156 



deflexus, 155, 156 



depressus, 156 



excavatus, 156 



gemmatus, 156 



gradocostatus, 156 



gurleyi, 156 



harrisoni, 156 



keokuk, 156 



littoni, 156 



longinodosus, 156 



lucasi, 156 



pellensis, 156 



randalli, 154, 287 



sculptus, 156 



semicostatus, 156 



similis, 156 



solidus. 155, 156 



speciosus, 154 



spectabilis, 155, 156 



varians, 155, 156 



venustus, 156 



vetustus, 155, 283 



wrighti, 153, 276 



xiphias, 156 



