INDEX TO GEOLOGY AND PALEONTOLOGY OF SCHOHARIE VALLEY 370 



Monotrypa monticulata, 324 3 . 



? spinulosa, 319 3 . 



tabulata, 32 8 2 . 

 Monotrypella abrupta. 320 4 , 324 3 . 



arbusculus, see Chaetetes (Mono- 

 trypella) arbuscuhis. 



colliculata, 281°. 



sphaerica, 305 2 , 308 4 , 309 4 , 309°. 



tabulata, 300 3 . 

 Mudrocks, 93 4 ; origin, 128 3 . 

 Murchisonia extennata. 319 5 . 



minuta, 310°. 



? terebralis, 318 3 . 

 Mytilarca sp., 318 2 . 



pyramidata, 326 s . 



Naples beds, 223 7 , 235-. 

 Nautilus bucinum, 331 s . 



(Discites) marcellensis, 212 1 , 329 7 ; 

 figure, 211. 



oriens, 329 5 . 

 New Salem, section south of, 29 1 6 - 



92 3 . 



New Scotland beds, 136 6 , 139 3 -41 2 , 

 171 9 , 174 4 , 253 1 , 256 1 , 258 9 , 280 1 , 

 28 1 5 , 282 2 , 2 8 5 4 , 28 9 l , 296 3 -97 4 , 300 9 ^ 

 I 1 , 307 3 -8 6 ; thickness, 141 2 ; fossils, 

 14P-52 9 , 32P-23 4 , 324 1 . 



Newberria claypolii, 292 s . 



North river bluestone, 222 s . 



Nucleospira sp., 310 4 . 

 concinna, 3 2 6 3 . 



ventricosa, 285 7 , 28 9 7 , 305 7 , 306', 

 309\ 322 1 . 

 Nucula bellistriata, 214 9 , 26 1 9 , 284 5 , 

 304 3 , 330 s ; figures, 217. 

 corbuliformis, 304 3 . 

 randalli, 26 1 9 , 330 7 . 

 Nuculites cuneiformis, 330 s . 



oblongatus, 265 7 , 273 8 , 284 5 , 304 8 , 

 330 s . 



triqueter, 261°, 284 5 , 304 3 , 330 s . 

 Nyassa argnta, 220 9 , 265 8 , 266 1 , 270 s , 

 293 1 , 304 1 , 33T; figures, 218. 

 recta, 304 1 , 331*. 

 subalata, 33 P.. 



Odontocephalus selenurus, 204 s , 

 298 s , 329 1 ; figures, 205. 



Odontochile calypso, 204 9 ; figure, 205. 



Oehlertella exilis, 330 2 . 



Oncoceras trusitum, 318 5 . 



Oneida conglomerate, 120 s . 



Oneonta beds, 223 9 , 225 3 -27 2 , 233 8 , 

 234 7 , 235 3 , 262 7 , 267 4 , 303*; thick- 

 ness, 225 7 ; uses, 356 9 . 



Oniskethau creek section, 2 9 2 4 -98 2 . 



Onondaga limestone, 176 6 , ^^S*, 

 252 3 , 255 3 , 258 4 , 279 7 , 284 7 , 286 8 , 

 288 2 , 294 3 , 298 7 , 304 4 ; thickness, 

 120 4 , 193 4 ; fossils, 195 2 -206 2 , 328 1 - 

 29 2 ; origin of fauna, 227 9 ; quarries, 

 35 6 6 . 



Onondaga time, paleogeographic map, 

 229. 



Ontario formation, 99 2 -132 4 . 

 Orbiculoidea ?, 304 s . 

 ampla, 288 s . 



(Lindstroemella) aspidium, 262% 



330 1 . 

 discus, 297 2 . 

 of. media, 271 5 , 332 2 . 

 randalli, 330 1 . 

 Oriskania sp., 306 9 . 



navicella, 305 s . 

 Oriskany beds, 157 2 -59 3 , 173 9 , 174«, 

 175 8 , 176 3 , 252 6 , 255 6 , 258 6 , 279 8 , 

 2 8 7 , 285 1 , 288 5 , 295 8 -96 2 , 299 4 , 304 9 - 

 5 9 ; fossils, 159 3 -68 2 , 279 5 , 324 6 -25 3 ; 

 thickness, 176 1 , 177 2 ; absence in 

 western New York, 176 s ; uses, 356 5 . 

 Orthis sp., 288 s , 297 7 . 



(Rhipidomella) alsus, 18P, 295 4 , 

 325 8 ; figures, 181. 

 discus, 296 4 . 

 (Schizophoria) impressa, 304\ 



multistriata, 2S9\ 

 (Rhipidomella) musculosa, 162 1 , 

 28P, 288 7 , 30.V. 324' 5 ; figures, 

 160. 



oblata, 14P, 174 3 , 174 5 , 280 4 , 285 T , 

 289 2 , 290 4 , 296 s . 305-, 306 4 , 

 306 8 , 307\ 30 7\ 30b", 309% 

 32P; figures, 141, 142. 

 emarginata, 309 s . 



peloris, 295 4 , 325 s . 



