284 



BULLETIX 16 9, UNITED STATES NATIONAL MUSEUM 



nebrascensis, Lioplax, 59. 

 Necrolemur, 144-146, 148. 

 Nedionodus senectus, 17, 59. 



senectus declivus, 59. 

 Neoclaenodon, 173-176. 



latidens, 187, 188. 



montanensis, 174-176, 181, 188. 



silberlingi, 175, 185. 

 Neoliotomus, 81. 



conventus, 83, 102. 



ultimus, 83. 

 Niobrara formation, 15. 

 nobilis, Platanus, 58. 

 notata, Aralia, 57. 

 Notharctinae, 147. 

 Notharctus, 217. 

 Nothodectes, 141, 164, 165. 



gidleyi, 165. 

 notissimus, Litolestes, 35, 48, 227. 

 Nyctitheriidae, 33, 60, 61, 106, 118 seq. 

 Nvctitherium, 119. 

 Oak, 58. 



obovata, Grewia, 57. 

 Omomys, 143, 161. 



belgicus, 144. 



vespertiniis, 144, 162. 

 Onoclea, 58. 



sensibilis fossilis, 57. 

 opisthacus, Mioclaenus, 225. 



Protoselene, 225-227. 

 Ornithorhynchus, 71. 

 Osborn, H. F., 7, 21, 71, 86, 127, 170- 



172, 217-219,225,258,266. 

 Osgood, W. H., 115. 

 Otter Creek, Mont., 13. 

 Owen, E,., 71. 

 Oxyacodon, 225-230, 232, 233. 241, 243. 



agapetillus, 225, 227. 



apiculatus, 225-227. 



priscilla, 225, 227. 



turgidunculus, 225. 

 Oxyclaenidae, 171, 257, 258. 

 Oxyclaeninae, 170-173, 192 seq. 

 Oxyclaenus, 171, 172, 195. 

 packi, Leptacodon. 113, 114. 

 Palaechthon, 53, 142-145, 147, 148, 156 

 seq., 159, 160, 164. 



alticuspis, 33, 47, 62, 156 seq., 159. 



minor, 159. 

 Palaeosinopa, 52, 120-122, 124, 126, 

 140, 258. 



diluculi, 122. 



species undetermined, 35, 47. 

 Palenochtha, 53, 142-145, 148, 158 seq. 



minor, 33, 47, 159 seq. 

 paleocena, Zaiiycteris, 136. 

 Palm, 58. 



Pantodonta, 34, 60, 61, 265 seq. 

 Pantolambda, 11, 27, 53, 221, 222, 265, 

 266, 269 seq. 



bathmodon, 269-271. 



cavirictus, 41,270, 271. 



intermedins, 34, 48, 270 seq. 



species undetermined, 34, 39, 48, 

 271. 



Pantolambdidae, 34, 60, 61, 217, 219, 



266-268, 269 seq. 

 Pantolambdids, 35, 40, 41, 48, 49, 50» 



62, 218-220. 

 Pantolambdinae, 269. 

 Pantolambdodontidae, 269. 

 Pantolestes, 120, 121, 140. 

 Pantolestidae, 33, 60, 61, 106, 120 seq. 

 Pantolestinae, 121 seq., 124. 

 parens, Gelastops, 33, 46, 109 seq. 

 Parectypodus, 52, 81-83, 99, 100, 102 

 seq. 



jepseni, 33, 46, 74, 75, 82, 83, 100, 

 102 seq. 



simpsoni, 77, 79, 82, 83, 102. 



species undetermined, 83. 



tardus, 77, 79, 83, 97, 103. 

 Paromomys, 50, 51, 53, 63, 66, 67, 

 142-147, 148 seq., 156, 157, 159, 

 162, 164. 



depressidens, 33, 47, 66, 147, 154 

 seq., 157, 159, 164. 



maturus, 33, 39, 47, 62, 66, 147, 

 149 seq., 154-157. 

 Paromomys, of., genus and species unde- 

 termined, 42, 47, 156. 

 Paskapoo formation, 11, 81, 83, 130. 

 patratus, Elpidophorus, 35, 42, 47, 50, 



51, 133. 

 Patterson, B., 11, 222, 266, 269. 

 paulus, Hyopsodus, 226. 

 Pearson, H., 78. 



Peltosaurus, species undetermined, 59. 

 pelvidens, Chriacus, 197. 

 Pelycodus, 148, 156, 162, 217. 

 Pentacodon, 53, 106, 120, 121, 124, 126. 

 Pentacodontinae, 121, 123 seq. 

 Periptvchidae, 34, 60, 61, 216, 217, 219, 



220,^224, 255 seq., 266-268. 

 Periptychinae, 217, 223, 224. 

 Periptychines, 259. 

 Periptychus, 62, 216, 218, 221, 222. 

 Perissodactyla, 216. 

 Phenacodaptes, 225, 226, 229-231. 



sabulosus, 226. 

 Phenacodontidae, 34, 60, 61, 216-218, 



223, 245 seq. 

 Phenacodonts, 62. 



Phenacodus, 54, 190, 191, 216, 223, 251. 

 Phenacolemur, 50, 146, 147. 



frugivorus, 35, 47. 

 Phenacops, 107, HI. 

 Phyllites cupanoides, 57. 

 PhvUostomatidae, 134, 135. 

 Physa, 17. 



canadensis, 17. 

 Picrodontidae. 33, 60, 61, 134 seq. 

 Picrodus, 53, 107, 134, 135 seq. 



silberlingi, 9, 3-3-, 47, 136 seq. 

 Pines, 58. 

 Plagiaulax, 70. 

 Plagiomene, 130. 

 Plagiomenidae, 130, 257. 

 planolatere, Viviparus, 59. 

 Plants, 56. 



