290 



PALEONTOLOGICAL INDEX 



Petricola, 201. 



pholadiformis, 143, 145, 146, 147, 201. 

 Petricolaria, 201. 

 Petricolidse, 201. 

 Pholadidae, 192. 

 Pboladinse, 192. 

 Pholas, 214. 



costata, 192. 



costatus, 192. 

 Pinaceae, 217. 

 Pinus, 217. 



echinata, 217, 273. 



sp.. 218. 



strobus, 218, 273. 

 Planera, 229. 



minuta, 230. 



ungeri, 229, 277. 

 Platanacese, 231. 

 Platanus, 231. 



aceroides, 231, 279, 280. 



aequidentatum, 232. 



basilobata, 232. 



mexicana, 232. 



occidentalis, 231, 232. 



ceynhausiana, 232. 



sp., 232, 2S1. 

 Pleurotoma cerinum, 178. 

 Pleurotomidae, 178. 

 Polygonaceae, 231. 

 Polygonales, 231. 

 Polygonum, 231. 



sp., 231. 

 Polynices, 191. 



duplicatus, 99, 143, 145, 146, 147, 191, 

 257. 

 Polystomella, 216. 



striatopunctata, 145, 147, 216, 272. 

 Populus 223. 



clarkiana. 223, 276. 



decipieus, 224. 



deltoides, 223 224. 



var occidentalis, 223. 



latior, 22! h 276. 



var rotunda ta, 224. 



lindgreni. 224. 



pseudo-tremuloides, 22h, 276. 



tremuloides, 224. 

 Porifera, 213. 

 Priodesmacea, 203. 

 Proboscidea, 157. 

 Protozoa, 155, 21!,. 

 Prunus, 233. 



raerriami, 233, 278. 



tufacea, 233. 

 Psammobiidae, 200. 

 Ptenoglossa, 18~>. 

 Pteridophyta, 155, 217. 

 Pterocarya, 222. 



amerlcana. 223. 



dentlculata, 222, 278. 



Pyramidellidae, 188. 



Pyrgiscus, 143, 144, 145, 146, 147, 188, 256. 



Quercus, 226. 

 alba, 227. 

 garryana, 227. 

 glennii, 226, 278. 

 gunnisoni, 227. 

 lyrata, 227. 

 macrocarpa, 227. 

 pseudo-alba, 227, 276, 277. 

 utabensis, 227. 

 wislizenii, 227. 



R 



Rachiglossa, 179. 

 Ranella caudata, 1S3. 

 Rangia, 195. 



cuneata, 144, 145, 146, 147, 195, 261. 

 Reptilia, 155, 169. 

 Rhamnales, 235. 

 Rbizopoda, 211,. 

 Rbus, 233. 

 Robinia, 2SJ,. 



pseudacacia, 234 ; 275. 

 Rosales, 231. 

 Rotalia, 215. 



beccarii, 145, 147, 215, 272. 

 Rotalidse, 215. 



Sapindaceas, 231,. 

 Sapindus, 23.1,. 



marylandicus, 231,, 278. 



obtusifolius, 235. 



oregonianus, 235. 

 Sapotaceae, 236. 

 Scala, 185. 



lineata, 144, 145, 147, 185, 256. 

 Scalaria lineata, 185. 

 Scalidae, 185. 



Scapbarca, 143, 144, 145, 146, 147, 206, 270. 

 Scobina, 145, 146, 147, 192, 258. 

 Semelidae, 197. 

 Sequoia, 219. 



angustifolia, 219, 277. 



langsdorfi, 219. 

 Silicispongins, 213. 

 Siliquaria caribaea, 200. 

 Solecurtus cariba;us, 200. 

 Solenacea, 196. 

 Solenidae, 196. 

 Solon directus, 196. 

 Solen gibbus, 200. 

 Spermatophyta, 155, 217. 

 Spongia sulphurea, 213. 

 Streptodonta, 785. 

 Streptoneura, 177. 



