INDEX. 



419 



Orthacanthus, 104. 

 Orthis, 53. 

 Orthoceras, 85. 

 Orthonotus, CI. 

 Orthophltbia, 47. 

 Osteolepis, 130. 

 Osteoplax, 138. 

 Ostracoda, 42. 

 Ostracostei, 118. 

 Ostreidse, 58. 

 Otozoum, 1G5. 

 Oudenodon, 238. 

 Ovibos, 401. 

 Ovulites, C, 12. 



Pachtcormus, 140. 

 Pachygyra, 25. 

 Pachyrisma, CC. 

 Pala? ister, 33. 

 Palsechinus, 35. 

 Palseocrangon, 45. 

 Palseocyclus, 25. 

 Palseoniscus, 137. 

 Palasophrynos, 283. 

 Pal.-eophys, 280. 

 Palaeopyge, 157. 

 Palseosaurus, 249. 

 Palasospongia, G. 

 Palseoteuthis, 81. 

 Palseotherium, 330. 

 Palapteryx, 294. 

 Paleryx, 280. 

 Palud in a, 77. 

 Pamphagus, 9. 

 Pandora, 68. 

 Panopaea, 68. 

 Parasmilia, 25. 

 Parexus, 103. 

 Passalodnn, 117. 

 Patella, 79. 

 Pecten, 58. 

 Pectunculus, 62. 

 Pelagosaurus, 271. 

 Pelorosaurus, 272. 

 Pentaerinus, 29, 30. 

 Pentamerus, 50. 

 Pentremites, 30. 

 Perna, 60. 

 Petricola, 67. 

 Pezophaps, 295. 

 Phacops 12. 

 Phascolomys, 395. 

 Phascolotherium, 304. 

 Phcenicnpterus, 292. 

 Pholadomya, 63. 

 Pholas, 69. 

 Pholidophorus, 143. 

 Phragmoceras, 83. 

 Phrvganea, 47. 

 Phvllodus, 149. 

 Phyllolepis, 132. 

 Phyllopora, 28. 

 Physa, 79. 

 Physonemus, 104. 



Pileolus, 74. 

 Pisces, 99. 

 Pisodus, 149. 

 Pistosaurus, 214, 230. 

 Placodermata, 118. 

 Placodus, 216. 

 Placoganoidei, 118. 

 Placoidei, 118. 

 Placuna, 58. 

 Placunopsis, 58. 

 Plagiaulax, 319. 

 Plagiostoma, 59. 

 Plagiostomi, 99. 

 Planorbis, 79. 

 Platemys, 282. 

 Platyacanthus, 104. 

 Platycrinus, 31. 

 Platysomus, 138. 

 Plesiosaurus, 223. 

 Plectrodus, 101. 

 Plectrolepis, 138. 

 Pleuracantlius, 103. 

 Pleuraster, 33. 

 Pleurophorus, 57, 66. 

 Pleurosternon, 281. 

 Pleurotomaria, 78. 

 Plicatilia, 15. 

 Plicatula, 59. 

 Pliolophus, 325. 

 Pliopithecus, 350. 

 Pliosaurus, 232. 

 Pododus, 138. 

 Podopilumnus, 4C. 

 Poecilopleuron, 271. 

 Pollicipes, 41. 

 Polycystineae, 10, 13. 

 Polygastria, 14. 

 Polypi, 19. 

 Polypothecia, 7. 

 Polytremaria, 78. 

 Polyptychodon, 235. 

 Polythalamia, 11. 

 Porambonites, 51. 

 Porcellia, 71. 

 Poromya, 68. 

 Posidononiya, 12, .57. 

 .Potamides, 77. 

 Poteriocrinus, 30. 

 Prionus, 47. 

 Procoelia, 273. 

 Producta, 53. 

 Propterus, 144. 

 Prosoponiscus, 45. 

 Protaster, 33. 

 Protemys, 281. 

 Protichnites, 159. 

 Protopithecus, 393. 

 Protornis, 291. 

 Protorosaurus, 253. 

 Protovirgularia, 20, 39. 

 Protozoa, 5. 

 Psammosteus, 138. 

 Pseudoci inus, 30. 

 Psittacodus, 117. 



Pteraspis, 101. 

 Pterichthys, 119. 

 Pterinea, 60. 

 Pterocera, 73. 

 Pterocoma, 31. 

 Pterodactylus, 24C. 

 Pterodonta, 80. 

 Pteroperna, GO. 

 Pteropoda, 71. 

 Pterosauria, 244. 

 Pterotheca, 72. 

 Pterygotus, 43. 

 Ptilodictya, 20. 

 Ptilopora, 20, 28. 

 Ptyacanthus, 103. 

 Ptychoceras, 89. 

 Ptychodus, 110. 

 Ptychognathus, 238. . 

 Pulmonifera, 70. 

 Pulvinites, 60. 

 Purpurina, 73. 

 Pj'cnodontes, 140. 

 Pycnodus, 142. 

 Pygaster, 34. 

 Pj'gocephalus, 45. 

 Pygopterus, 168. 

 Pyramidella, 76. 

 Pyrina, 36. 

 Pyritonema, 21. 

 Pythina, 65. 



Radiata, 19. 

 Radiolites, 63. 

 Raia, 115. 

 Raiidae, 113. 

 Ramphorhvnchus, 246. 

 Rana, 284.' 

 Ranella, 73. 

 Raniceps, 183. 

 Raphiosaurus, 278. 

 Rapbistoma, 77. 

 Rastrites, 20. 

 Reptilia, 168. 

 Geological distribu- 

 tion of, 285. 

 Requienia, G3. 

 Retzia, 52. 

 Rhabdoidea, 11. 

 Rhinoceros, 366.- 

 Rhinodon, 98. 

 Rhizoclus, 132. 

 Rhodocrinus, 31. 

 Rhizopoda, 8. 

 Rhombus, 149. 

 Rhyncholites, 86. 

 Rhynchonella, 51. 

 Rhynchosaurus, 239. 

 Rhynchoteuthis, 81. 

 Rimella, 73. 

 Ringicula, 80. 

 Rissoa, 62. 

 P.odentia, 385. 

 Rosalina, 12. 

 Kostellaria, 73. 



