INDEX 



285 



platanifolia, Grewiopsis, 57. 

 Platanus aceroides, 19. 



haydenii, 57. 



nobilis, 58. 



raynoldsii, 19. 



species undetermined, 19. 

 Plateau Valley formation, 11. 

 Platychoerops, 164. 

 Plesiadapidae, 33, 60, 61, 143, 164 seq. 

 Plesiadapis, 50, 51, 53, 141, 144, 147, 

 164-166, 167 seq. 



anceps, 35, 47, 50, 51, 156, 168, 169. 



gidlevi, 168. 



rex, 42, 47, 51, 156, 167 seq. 



tricuspidens, 165. 

 Plesiolestes, 141, 143, 165. 

 Pleuraspidotheriidae, 218. 

 Pleuraspidotheriinae, 224. 

 pliciferus, Tetraclaenodon, 246-249, 253. 

 Polecat Bench, Wye, 20, 27. 

 politus, Viverravus, 208. 

 Poplars, 58. 

 Populus amblyrhyncha, 57. 



cuneata, 57. 



daphnogenoides, 57. 



genetrix, 57. 



species undetermined, 57. 

 Porcupine Butte, Mont., 13, 25, 29, 41, 



42. 57. 

 Potter Creek, Mont., 27. 

 Powder River Basin, Wyo., 11. 

 Prentice, S., 6. 

 primaevus, Arctocyon, 7. 



Titanoides, 11. 

 Primates, 2, 10, 33, 60, 61, 127, 128, 



135, 141 seq., 217. 

 primus, Eucosmodon americanus, 83, 



103, 104. 

 Princeton localities, Mont., 40, 46. 

 Princeton Quarry, Wyo., 55. 

 priscilla, Oxj^acodon, 225, 227. 

 priscus, Ellipsodon, 227, 228. 



Elliptio, 17. 

 Proboscidea, 265. 

 procyonoides, Claenodon, 176. 

 Prodiacodon, 52, 106, 107, 111, 112 seq. 



concordiarcensis, 33, 46, 112 seq. 



puercensis, 112, 113. 

 Proectocion, 250. 

 Proglires, 127. 



Pronothodectes, 50, 51, 53, 147, 162, 

 164, 165 seq. 



matthewi, 33, 47, 165 seq. 

 Proscalops, 140. 

 protenus, Didymictis, 209, 210. 

 Prothryptacodon, 51, 53, 173, 192, 193, 

 194 seq., 199. 



furens, 34, 38, 47, 194, 195 seq. 

 Protictis, 209. 



haj'denianus, 209. 

 Protochriacus, 171. 

 Protogonia, 216, 246. 



subquadrata, 246. 

 protogonioides, Claenodon, 175-177, 

 181, 186. 



Protogonodon, 5, 53, 172, 190, 191, 250, 



251. 

 Protoselene, 225-232, 241, 251, 254. 



opisthacus, 225-227. 

 provocator, Metachriacus, 37, 38, 47, 



49, 66, 194, 200 seq., 204. 

 Pseudoloris, 161. 

 Psittacotheriinae, 169 seq. 

 Psittacotherium, 31, 53, 169 seq. 

 lobdelli, 170. 



multifragum, 34, 47, 49, 53, 68, 169 

 seq. 

 Pterospermites, 57. 

 Ptilodontid undetermined, 35. 

 Ptilodontidae, 33, 60, 61, 73, 74, 80 seq. 

 Ptilodus, 10, 31, 52, 65, 67, 70-73, 81-83, 

 84 seq., 99, 161. 

 admirabilis, 84, 85. 

 douglassi, 33, 46, 67, 74, 75, 82, 83, 



95, 96, 102. 

 formosus, 97, 101. 

 gidlevi, 33, 38, 46, 67, 74, 75, 82, 



83, 95 seq. 

 gracilis, 70, 74, 84. 

 mediaevus, 52, 67, 70, 77-80, 82, 



83, 85, 96. 

 montanus, 9, 33, 37, 38, 46, 52, 62, 

 67, 70, 74-80, 82, 83, 84 seq., 

 95-97. 



sinclairi,' 33, 36, 46, 48, 52, 62, 67, 

 74-76, 78, 79, 82, 83, 96, 97 seq., 

 101. 

 species undetermined, 33, 46, 83. 

 trovessartianus, 77, 82, 83, 96. 

 puercensis, Euprotogonia, 247. 

 Prodiacodon, 112, 113. 

 Tetraclaenodon, 34, 39, 48, 49, 

 246-248, 249 seq. 

 Puerco formation, 7, 11, 16, 18, 21, 46, 

 52-55, 81, 83, 173, 186, 191, 196, 224, 

 255 259. 

 Puet Creek, Mont., 28. 

 pugnax, Chriacus, 36, 47, 48, 194, 196, 



197. 

 punitor, Metachriacus, 34, 47, 49, 62, 



66, 194, 197 seq., 201, 202, 204. 

 pusillus, Chriacus, 194, 197-199. 

 raynoldsii, Platanus, 19. 

 Red Lodge, Mont., 27. 

 Reed Point, Mont., 27. 

 Reptiles, 59, 

 retusus, Viviparus, 59. 

 rex, Plesiadapis, 42, 47, 51, 156, 167 seq. 



Tetonius, 167, 168. 

 Richards, R. W., 26, 58. 

 Rodents, 127, 128. 

 Roger, O., 232. 

 Romer, A. S., 86. 



Russell, L. S., 11, 17, 52, 58, 59, 101. 

 russelli, Ectvpodus, 33, 46, 67, 74, 75, 



79, 82, 83i^ 99 seq. 

 sabulosus, Phenacodaptes, 226. 

 Sahx, species undetermined, 57. 

 San Juan Basin, N. Mex., 2, 7, 55, 83, 

 224. 



