INDEX 



289 



Paracone, 57 



Para coni d, 57 



Parapithecus fraasi, 120 



Pecora, 206 



Peltephilus, 166 



Peramus, 59 



Permian epoch, Relation of to 



mammalian history, 42 

 Perissodactyls, ancestry of, 218 

 definition of, 199 

 relation of Hvrax to, 228 

 Petaurus brevieeps, 79 

 Phalanger, 82 

 Phascolarctos cinereus, 83 

 Phascologale flavipes, 70 

 Pbascolomys ursinus, 90 

 Phocaena communis, dentition of, 



235 

 Phrynosoma, 16 

 Pigs, 201 

 Pike, teeth of. 33 

 Pinnipedia, 1S5 

 Pitheeus rhesus, milk dentition of. 



251 

 Placental, definition of, 65 

 Platvpr.s Duck-hilled, dentition of, 



236 

 Platyrrhinae. 117 

 Plexodont Theorv, 69 

 Polvprotodonts, 6S, SI 

 Poiigo, 132 

 Porcupine Tree, 192 

 Porpoise, 235 

 Postorbital bone and process. 41. 



47, 51 

 Potamochoerus porous. 201 

 Potamogale velox, 104 

 Potorous didactvlus, 86 

 Predmost mandible, 245 

 Premilk dentition. 214, 253 

 Premolar Analogy Theorv. 61, 103 



213 

 Premolar, chanqes of, in Pri- 

 mates, 109 

 Primates, adaptive variations in, 107 

 dental formula of, 107. 116 

 Eocene, 10S 



relative position of to Man. 106 

 Primitive, definition of, 30 

 Primitive Polvbuny Theory, 55 

 Proboscidea, 220 

 Proboscidea, relation of Hvrax to. 



228 



Procyon. 182, 271 



Procyonidae. progression in tooth 



forms of, 271 

 Progressive Simplification Theorv, 



69 

 Propliopithecus, 125 

 Proteodidelphys, 69 

 Protocetus, 234 

 Protodildonta, 53 

 Prototheria, 64 

 Pseudo-hvpocone, 85, 88, 93, 114, 127 



Quadrate bone, Fate of, 43 



R 



Raccoon. 182. 271 



Raccoon, Crab-eating, 274 



Rasse, 176 



Rat, 191 



Reptiles, Mammal-like, 45 



Reptiles, teeth of, 37 



Rhinoceros, 214 



Rivers, action of, 25 



Rodent dentition, 115, 1S8 



Rodents, ancestry of, 188 

 divisions of, 1SS 



Root, incipient division of in Tri- 

 assic, 53 



Roots of teeth, 145, 257 



in Anthropoids, 145, 261 

 in Daubentonia, 263 

 in modern Man 145. 261 

 in Xeandertal Man, 146, 265 

 number of in Mammals, 259 

 relation of to environment, 257 

 relation of to hypsodonty 260 

 relation of to inferior dental 

 canal, 262 



Ruminant-like modifications in 

 Rabbit, 196 



Ruminants, 206 



s 



Sapajou Monkev, milk teeth of, 



252 

 Sarcophilus ursinus, 72 

 Sea-lion, 185 

 Seals, 186 



Seas, significance of, 26 

 Sciuromopha, 1S9 

 Sectorial tooth, 173 



