384 



INDEX 



Seneean group, New York, fish remains 



in, 198, 199, 281 

 Sensory canals of Protitanichthys, 



202 

 Sewer pipe, production of, 19 

 "Shagreen", 66, 95 

 Sharls, characters of, 95 



Palaeozoic, spines of, 152 

 "Shear teeth" in Dinichthys, 190 

 Sheffield, Ohio, fish remains from, 283, 



285 

 Sherborn, C. D., cited, 275 

 Shimek, B., work of, on loess, 4 

 Silurian system, fish remains in, 59, 

 72 

 Ostracophores in, 71 

 vertebrate life in, 53, 150 

 Sirenoidei, 68, 69 



in Devonian, 157 

 Skeleton, structure of, in classification, 



66 

 Solon, Iowa, vertebral centrum from, 



147 

 Sonrel, plates by, 257 

 Sparta, New York, fish remains from, 



113, 257, 260, 281, 282 

 Sphenodon, development of, 165 

 Sphenophorus sp., 279 



Hlleyi, 207, 288 

 Spine-finned fishes, development of, 64 

 Spitzbergen, fish remains from, 239 

 Spyrna zygaena, food habits of, 218 

 Stafford, New York, fish remains from, 



117 

 State Quarry limestone, Iowa, 46 

 fish remains from, 50, 134, 135, 137, 

 139, 206, 213, 215, 220, 221, 223, 

 226, 231, 233, 235, 277, 2S6, 287 

 notice of fish-fauna from, 5 

 Stegocophalia, descent of, from fishes, 



62 

 Stenaranthus nitidus, 92 

 Stenognathvs corrvgatus, 2S4 

 Stenosteus glabcr, 2S5 

 Stethacanmus, 140, 141, 143 

 Stone, crushed, use of, as road ma- 

 terial, 3 



Stone, production of, by counties, 14, 

 24 

 by years, 13 

 classified, 23, 24 

 Stookey, S. W., work of, 4 

 Stratigraphy of Devonian fish-bearing 



beds of Iowa, 45 

 Strepsodvs sp., tooth of, 288 

 Strong collection of fossils, 253 

 Sturgeon Point, New York, fish re- 



• mains from, 179, 281 

 Sturgeons, characters of, 63, 255 

 Styliola beds, New York, fish remains 



from, 198 

 Suess, E., cited, 44 

 Susquehanna river, Pennsylvania, fish 



remains from, 290 

 Sweetland Creek shales, Iowa, 46 



fish remains from, 50, 134, 233. 235, 

 286 

 Synthetodonts, in Iowa Devonian, 48 

 Synthetodus, characters of genus. 231 

 Synthetodus calvini, 213, 233, 287 



trisulcatus, 213, 231, 286 

 T 

 Taine, cited, 38 

 Tamiobatis vetustus, 279 

 Taylor county, Iowa, work in, 4 

 Tectospondyli, 69 - 

 Teleostomi, 68, 69 



characters of subclass, 236 



relations of, 159, 160 



scales of, 66 

 "Teleosts", 66 



characters of, 236 

 Teller, E. E., cited, 143 



mentioned, 141 

 Temnauchenia, 160 

 Texas, fish remains from, 163 

 Thelodus, 57, 72 



"eye spots" of, 266 



scales of, 275 

 , shagreen granules of, 276 

 Thelodus scoticus, 55 

 Thuringia, phosphatic concretions 



from, 266 

 Thyestes, 74 



classification of, 56 



