INDEX 



333 



Phacocboerus, fore foot,' 299 

 Phalanges, 276 

 Pharyngobranchial, 65 

 Pholidota, skull, 207 

 Phrynosoma, sternum, 55 

 Phyllospondylous vertebra, 38 

 Phytosauria, skull, 166 

 Pila preotica, 61 

 Pimelodus, pectoral girdle, 237 

 Pinnae, 221 

 Pisiforme, 277 

 Placodontia, skull, 144 

 Placoid scales, 4, 10 

 Plantigrade, 278 

 Plastron, 14 

 Plateosaurus, skull, 137 

 Platybasic cranium, 63 

 Plesiosaurus, skull, 150 

 Pleural ribs, 24 

 Pleurethmoid, 109 

 Pleuroccipital, 69 

 Pleurocentrum, 37 

 Pleuronectes, cranium, 108 



fins, 224, 225 



pectoral girdle, 237 



skull, 93, 107 



visceral arches, 71 

 Pleurosphenoid, 60 

 Ploughshare bone, 48 

 Podia, 227 

 Pollex, 277 



Polyborus, pelvis, 270 

 Polyodon, vertebrae, 32 

 Polypterus, chondrocranium, 10 1 



finlets, 226 



pectoral fin, 239 

 girdle, 236 



skull, 102 



vertebrae, 24 

 Polyspondyly, 28 

 Postclavicula, 230 

 Postcleithrum, 230 

 Postfrontal bone, 74 

 Postglenoid process, 196 

 Postischium, 267 

 Postminiraus, 277 

 Postorbital bone, 74, 94 



crest, 85 

 Posttemporal bone, 94, 230, 236 



fossa, 76, 137 

 Postzygapophysis, 18 



Preclavia, 57, 259 

 Precoracoid, 229 

 Prefrontal, 74 

 Prehallux, 277 

 Premaxilla, 73 

 Prenasal bone, 104, 190 

 Preoperculum, 98 

 Preorbital bone, 94 



crest, 85 

 Prepollex, 277 

 Prepubic process, 270, 273 

 Presphenoid, 70 

 Presternum, 51, 248 

 Prevomer, 77, 198 

 Prezygapophysis, 18 

 Primates, appendages, 301 



skull, 219 

 Proatlas, 27 

 Proboscidia, skull, 217 

 Procavia, skull, 216 

 Proccelous vertebrae, 22 

 Procolophon, cranium, 75 

 Procoracoid, 229 

 Prootic, 70 

 Propterygium, 233 

 Proteus, skull, 126 

 Pteraspis, skull, 90 

 Pterion, 186 

 Pterodactyls, pelvis, 269 



skull, 167 



sternum, 54 

 Pteropus, pelvis, 274 



skull, 2c6 

 Pterosauria, appendages, 287 



pectoral girdle, 255 



skull, 167 



sternum, 51 



vertebrae, 46 

 Pterotic, 70, 194 

 Pterygia, 227 

 Pterygoid bone, 77 



groove, 189 

 Pterygophores, 223 

 Pterj'goquadrate cartilage, 66 

 Pubis, 231 

 Pygal plate, 14 

 Pygostyle, 48 

 Pyramidalis, 277 

 Python, skull, 159, 160 



vertebrae, 42 

 Pythonomorpha, skull, 186 



