INDEX TO GEOLOGY AND PALEONTOLOGY OF SCHOHAiilE VALLEY 379 



Monotrypa montieulata, 324^. 



? spinulosa, 310^- 



tabulata, 3'28^ 

 Monotrypella abrupta. 320*, 324^ 



arbusculus, see Chaetetes (Mono- 

 trypella) arbusculus. 



colliculata, 28P. 



sphaerica, 305", 308^ 309^ 309". 



tabulata, 300^ 

 Mudrocks, 93*; origin, 128^ 

 Murchisonia extenuata. 319^. 



niinuta, 310°. 



?terebralis, 318^ 

 Mytilarca sp., 3 18-. 



pyramidata, 326^ 



Naples beds, 223', 235-. 

 Nautilus bucinum, 33 P. 



(Discites) marcellensis, 212\ 329'; 

 figure^ 211. 



oriens, 329^. 

 New Salem, section south of, 291®- 



92^ 

 New Scotland beds,. 136^ 13 9^-4 1^ 



17P, 174*, .253^ 256S 258^ 280S 



281^, 282^ 285*, 289S 296^-97*, 300®-^ 



l\ 307'-8«; thickness, 141- ; fossils, 



14P-52^ 321='-23*, 324\ 

 Newberria claypolii, 292^. 

 North river bluestone, 222^ 

 Nucleospirasp., 310*. 



concinna, 326^. 



ventricosa, 285^ 289^ 305^ 306', 

 309\ 322\ 

 Nucula bellistriata, 214^ 26 1^ 284^ 

 304^ 330^ figures, 217. 



corbulifo'rmis, 304^. 



randalli, 26 1^ 330^ 

 Nuculites cuneiformis, 330®. 



oblongatus, 265^ 273^ 284^ 304', 

 330\ 



triqu'eter, 26 P, 284^ 304^ 330^ 

 Nyassa arguta, 220', 265^ 2Q6\ 270\ 

 293S 304^ 33 P; figures,, 218, 



recta, 304S 33 P. 



subalata, 331^. 



Odontocephalus selenurus, 204', 

 298», 329^; figures, 205. 



Odontochile calypso, 204' ; figure, 205. 

 Oehlertella exilis, 330-. 

 Oncoceras trusitum, 318^. 

 Oneida conglomerate, 120^ 

 Oneonta beds, 223', 225^-27-, 233^ 

 234^ 235^ 262^ 267*, ^03*; thick- 

 ness, 225"; uses, 3'56'. . 

 Oniskethau creek section, 292*-98-. 

 Onondaga limestone, 176^ 193^-95', 

 252% 255% 258*, 279", 284% 286% 

 288% 294% 298% 304*; thickness, 

 120% 193*; fossils, 195^-206% 328^- 

 29-; origin of fauna, 227'; quarries, 

 356^ 

 Onondaga time, paleogeographic map, 



229. 

 Ontario formation, 99--132*. 

 Orbiculoidea ?, 304". 

 ampla, 288®. 

 (Lindstroemella) aspidium, 262', 



330% 

 discus, 297-. 



■cf. media, 271% 332-. ; 



randalli, 330% 

 Oriskania sp., ^06'. 



navicella, 305®. 

 Oriskany beds, 157^-59% 173% 174% 

 175% 176% 252% 255% 258% 279% 

 280% 285% 288% 295®-96% 299% 304'- 

 5'; fossils, 159^-68% 279% 324«-25'; 

 thickness, 176% 177- ; absence in 

 western New York^ 176®; uses, 356% 

 Orthis sp., 288% 297^ 



( Ehipidomella ) alsus, 181% 295% 

 325®; figures, 181. 

 discus, 296*. 

 ( Schizophoria ) impressa, 304^ 



multistriata, 2S9-. 

 (Ehipidomella) musculosa, 162% 

 281% 288% 305% 324«; figures, 

 160. 

 oblata, 141% 174% 174% 280% 285% 

 289% 296% 296®, 305% 306% 

 306% 307% 307% 30»", 309% 

 321^ figures, 141, 142. 

 emarginata, 309% 

 peloris, 295% 325% 



