INDEX. 



467 



Osteoglossidao 117 

 Osteolepidaa 77 

 Osteolepis 78 

 Osteostraci 8 

 Ostracion 1'2'2 

 Ostracodermi 3 

 Ostracophori 3 

 Ostrich 241 

 Otoccelus 149 

 Otocyon 389 

 Otomitla 108 

 Otter Hi fi 

 Oudenodon 159 

 Ovibos 373 

 Oxygomphius 260 

 Oxyrhina 48 



Pachyaena 383 

 Pachycormidse 109 

 Pachycormus 109 

 Pachynolophus 325 

 Pachyomis 240 

 Pachypoda 196 

 Pachyrhizodus 118 

 Pachyrucus 311 

 Paidopithex 407 

 Paired fins 24 

 Palaeaspis 6 

 Palaelodus 244 

 Palaeobatrachidffi 140 

 Palitobatrachus 140 

 Paleeohatteria 184 

 Palaeolagus 377 

 Palseoliths 410 

 Palseomylns 55 

 Palsroniscidea 82 

 Palaeoniscus 86 

 Palteophis 195 

 Paheophoca 402 

 Palaeoprionodon 396 

 Palaeoreas 372 

 Palaeorycteropus 287 

 Palffioscyllium 46 

 Pal&eospinax 40, 46 

 Palffiospondylidae 3 

 Palsospoudylus 3 

 PalaBOsyopa 332 

 Palffiotheriidffi 325 

 Palaeotherium 325 

 Palseotragus 369 

 Palingenetic characters xxv 

 Palmated antlers 370 

 Palorchestes 266 

 Parallelism in evolution xxiv 

 Parasuchia 217 

 Parasuchus 218 

 Paraxonic 339 

 Parexus 38 

 Pariasauria 145 

 Pariasaurus 145 

 Pariotichus 150 



Patriofelis 384 

 Peccaries 341 

 Pelagosaurus 218 

 Pelobatidae 140 

 IVlosiimus 129 

 Peltephilus 282 

 Pelycosauria 186 

 Peramelidae 261 

 Peratherium 260 

 Percesoces 120 

 Percomorphi 121 

 Perissodactyla 319 

 Permian fauna 414, 415 

 Persistent types xx 

 Petalodontidffi 50 

 Petrobates 131 

 Pezophaps 241 

 Phacochcerus 341, 346 

 Phalangeridae 263 

 Phaneropleuron 62, 63 

 Phanerosteon 86 

 Phascolomyidffl 266 

 Phascolomys 266 

 Phascolonus 266 

 Phascolotherium 257 

 Phenacodus 290 

 Phlyctasnaspis 412 

 Pholidogaster 132 

 Pholidophoridae 114 

 Pholidophorus 114 

 Phororhachos 244 

 Phosphorites 422 

 Physodon 273 

 Phytosaurus 217 

 Pinnipedia 401 

 Pisces 17 



Pithecanthropus 409 

 Placpid 18 

 Plagiaulacidae 249 

 Plagiaulax 249 

 Plateau man 410 

 Platecarpus 194 

 Platychosrops 375 

 Platyphoca 402 

 Platyrhina 54 

 Platysomidae 87 

 Platysomus 87 

 Plectognathi 122 

 Plectospondyli 119 

 Pleistocene fauna 427 

 Plesiocetus 274 

 Plesiosanrus 165 

 Pleuracanthidte 33 

 Pleuracanthus 20, 21, 24, 33 

 Pleurodira 175 

 Pleurodus 42 

 Plenropholis 114 

 Pleuroplax 42 

 Pleuropterygii 29 

 Pleurosternum 172 

 Pliocene fauna 424 



