374 



INDEX 



Dorsal fin-spines, 138 



Downtown beds, Great Britain, verte- 

 brate life in, 53 



Drain tile, production of, 19 



Drepanaspids, relations of, 160 



Drevermann, P., cited, 57 



Dubuque, Iowa, lead and zinc from, 26 



Dubuque county, Iowa, crushed stone 

 roads in, 3 



Ductus endolymphaticus, 176 



E 



Ears of Rhadinichthys deani, 269, 272 

 East Lothian, Scotland, fish remains 



from, 274 

 Eastman, C. R., cited, 73, 84, 92-94, 



104-106, 108, 113, 123, 124, 127, 131, 



133-135, 138, 139, 142, 143, 146, 150- 



154, 161, 169, 175, 177, 184, 1S6, 



191, 193, 194, 198-201, 218-223, 225, 



226, 231, 233, 247, 258 

 work of, on Devonian fishes of Iowa, 



4 

 Eczematolepis pustulosus, 142 

 Edinburgh, Scotland, fish remains 



from, 60 

 Eel-shaped fishes, decadent forms, 254 

 Eels, occurrence of, 254' 

 Egerton, P. G., cited, 261 

 Eichwald, cited, 228 

 Eifel District, Prussia, fish remains 



from, 128, 167, 176, 177, 225-227, 



240 

 Eighteen Mile Creek, New York, fish 



remains from, 278, 281, 282 

 Elasmobranchii, 68, 69 

 characters of subclass, 95 

 dermal plates of, 149 

 hyostyly in, 66 



list of, 275, 276, 280-282, 286, 287, 289 

 origin of, 71 



Silurian, character of, 59 

 Elbert formation, fish remains in, 94, 



110, 285, 286, 287 

 Elgin, Scotland, fish remains from, 



228 

 Elmhurst, Illinois, fish remains from, 



105, 135, 286 

 Elonichthys, characters of genus, 273 



Elonichthys browni, 274 

 "eye" of, 266 

 elegantulus, 274 



striatulus, 273 



England, fish remains in, 104, 228 231, 

 242 



Enniskillen, Lord, mentioned, 244 

 Enteropneusta, characters of, 52 

 Eocene, fishes in, 64, 255 

 Erian group, fish remains in, 117, 143, 



154, 193 

 Erie county, New York, fish remains 



from, 260 



Erie county, Ohio, fish remains from 

 285 



Erie shale, Ohio, list of fossil fishes 



from, 282 

 Erismacanthus barbatus, 149 

 Eskdale, Scotland, fish remains from, 



261 

 Etheridge, R., Jr., cited, 225, 227, 275 

 Euomphalus bed, Iowa, fish remains 



from, 219 



Euphaneropidae, 69 



Euphanerops longaevus, 74, 280 



Europe, fish remains from, 207, 240 



Eurylepis from Waverly beds, 260 



Eusthenopteron, 236 



Eusthenopteron foordi, 280 



Evolution, effect of, on paleontology 

 40 



Evolutionary history of fishes, 51 



Fairport, Iowa, fish remains from, 213, 



220, 279 

 Falls of the Ohio, fish remains from, 



141 



Faunal lists of fossil fishes, 275 



Fayette breccia, 47 



Fertile, Iowa, peat briquetting plant 



near, 28 

 Fin-spine, undetermined. 281 

 Fin-spines, dorsal, 13S 



origin of, 59 

 Fins, character of, in Pleuropterygii, 

 98, 99 

 evolution of, 67, 68 

 origin and development of, 59, 63, 

 65, 67 



