INDEX TO GEOLOGY AND PALEONTOLOGY OF SCHOHARIE VALLEY 377 



Ischadites bursiformis, 325 7 . 

 squamifer, 324 5 . 



Isochilina sp., 308 3 , 308 4 . 



Ithaca formation, 223 2 -25 2 , 234 s , 

 267 3 , 27P, 2 7 3 5 , 274*; thickness, 

 223% fossils, 332% uses, 356». 



Kaaterskill creek, section of Devon- 

 ian rocks made in, 275 x -76 4 . 

 Kemp, cited, 128 9 , 17 P. 

 Kionoceras darwini, 3 IS 5 . 

 Knox, section near, 279 4 -S0 6 . 



Laevidentalium sp., 3 ll 1 . 

 Lamellibranch, 309 7 . 

 Leda brevirostris, 330 s . 

 diversa, 330 8 . 

 obscura, 330 s . 

 Lepadocrinus gebhardi, 137\ 320 4 ; 



figure, 137. 

 Leperditia alta, 112 5 , 112 9 , 117% 

 239 6 , 2 40 s , 246 4 , 248 6 , 25 P. 282 T , 

 290 5 , 290 s , 29 P, 29 1 9 , 297''. 298 2 , 

 30P, 301 9 , 310 s , 311 1 , 311 3 , 3-12 2 , 

 319 6 , 320% figure, 115. 

 jonesi, 111 2 , 238°, 239% 257\ 318 7 , 

 319 1 . 



scalaris, 111 3 , 132 3 , 318 7 ; figure, 

 111. 



Leptaena rhomboidalis, 145 7 , 174 5 , 

 195 9 -96\ 236 s . 280 3 , 28 1 7 . 285 8 , 

 2 8 9 3 , 289 6 , 29 4 7 , 2 9 6 4 , 296 7 , 2 98% 

 299 s , 300 s , 301 4 , 3 04 6 , 306\ 306\ 

 307 s , 308 4 , 3-09 2 , 310 2 , 313\ 317% 

 320 s , 321 9 , 325 9 , 328% figures, 144, 

 194. 



ventricosa, 324 7 . 

 Leptaenisca concava, 296 7 , 309 3 . 

 Leptocoelia acutiplicata. 304 s , 305 6 . 



flabellites, 162 7 , 28S 7 , 299 7 , 305'', 

 324% figures, 164. 

 Leptodesma rogersi, 293 1 , 330 5 . 

 Leptostrophia becki, see Stropheodon- 

 ta (Leptostrophia) becki. 



magnifica, 162 1 , 305'; figures, 160. 



magniventer, 305 4 . 



oriskaniaj 299 s , 305 4 . 



perplana, 181°, 304°; figures, 182. 



Lichas bigsbyi, 323 4 . 



(Ceratolichas) dracon, 329 2 . 

 (Conolichas) eriopis, 204 9 , 329% 



figures, 205. 

 (Terataspis) grandis, 327 s . 

 (Ceratolichas) gryps, 329 2 . 

 (Conolichas) hispidus, 327 s . 

 (Dicranogmus) ptyonurus, 318 7 . 

 pustulosus, 32 1 2 , 323\ 

 Lichenalia sp., 297 3 , 307 1 . 

 cf. concentrica, 317 7 . 1 

 torta, 2 89 3 , 2 8 9 s , 308 1 , 308% 309% 

 309 4 , 309 7 , 309 s . 

 Lime mudrocks, origin, 128 3 . 

 Limoptera macroptera, 262-. 331"'. 

 Linden limestone, 174 7 . 

 Lindsley, cited, 316 2 . 

 Lindstroemella aspidium. 262 3 . 330 1 . 

 Lingula centrilineata, 280 4 , 281 s . 

 ceryx, 325 s . 

 densa, 304% 330 2 . 

 perlata, 320 5 , 32 1 7 . 

 punctata, 292 s , 330 2 . 

 rectilatera, 32 1 7 . 

 spathata, 32 1 7 . 

 Lintner, Charles, acknowledgments 



to, 81 9 . 

 Lioclema ponderosum, 324 . 

 Liopteria bigsbyi, 266'. 271% 272% 

 293 2 , 330 3 , 332 5 . 

 dekayi, 293 2 , 332 5 . 

 greeni, 330 3 . 

 leai, 230% 

 mitchelli, 330 5 . 

 troosti, 330% 

 Liorhynchus limitaris, 207°, 329 4 . 

 multicostum, 261 3 , 329% 

 mysia, 207 5 , 209 6 , 251 9 , 329 4 , 329% 

 figures, 210. 

 Little Schoharie creek, section along,. 

 26P-63% 



Lockport dolomites, thickness. 120". 

 Longwood (Salina) shales. 125', 171°. 

 Lorraine beds, 99 3 , 121% 242°-43% 



253°, 282°-83 T , 284 2 , 286', 29 P. 



292 s ; thickness, 99*. 

 Lower Helderberg group. 133% De- 



vonic age of higher portions, 133 5 - 



