INDEX 



287 



Gibbon, milk teeth of, 246 



Gibraltar skull, 140 



Giraffe, 206 



Glacial periods, 28 



Glaciers, action of, 27 



Glenoid fossa, formation of, 44 



Glenoid fossa, relation of, to den- 

 tition, 276 



Gorilla, 129 



Gorilla, milk teeth of, 246 



Grazing habit, effect of upon teeth 

 89 



Ground-hog, 189 



Guereza Monkeys, 125 



Gymnura, Lesser, 98 



II 



Hapalidae, 117 

 Heidelberg Man, 136 

 Hippopotamus, 203 

 Hog, Red River, 201 

 Homo aurignacensis, 141 

 Homo heidelbergensis, 136 

 Homo mousteriensis, 142 

 Horned Toad, 46 

 Horse, 215 



ancestry of, 215 



Dawn, 215 

 Howler, 118 

 Human teeth, recent modifications 



in, 150, 151 

 Hyaenas, 178 

 Hylobates, 127 

 Hylomys suilla dorsalis, 98 

 Hypocone, 60 

 Hypoconoid, 59 

 Hvpoconulid, 59 

 Hypsodonty, 88, 214, 259 



in Dugong, 223 



in elephant, 222 



elongation of cusps in, SS 



elongation of tooth body in, 78 

 Hyrax, 226 



Hyrax, ancestry of, 228 

 Hystricomorpha, 192 



I 



Iguana, teeth of, 38 



Incisors, changes of, in Primates. 

 109 



Incisors, importance of in denti- 

 tion, 232 



Incisurs, number of, in Mammals, 



66 

 Indrisinae, 113 



Insectivores, central position of, 95 

 Modern Carnivorous, modern 



adaptation in, 97 

 modern. Omnivorous adaptation 



in, 99 

 modern, Specialized characters 

 of, 96 

 Islands, types of, 26 

 Isostatic balance, 25 



Jurassic Mammals, 55 



Kangaroo, S6 



Rat, S6 



Tree, 88 

 Kinetogenesis, 277 

 Kinkajou, 276 

 Koala, S3, 114, 119 



L 



Land masses, history of, 24 

 Langurs, 125 

 Lasiopyga mona, 122 

 Lemurs, 109 

 ^emur eatta, 112 

 Lemur, Flying, 230 

 Lemurs, history of, 116 

 Lemur, Mouse, 111 

 Lemur, Ring-tailed, 112 

 Lemur, Specter-, 110 

 Lemur, Woolly, 113 

 Lepus floridanus, 195 

 Lichanotus laniger, 113 

 Limbs, evolution of, 46 

 Llama, 204 



M 



Macropus bennetti, 86 

 Mammals, age of, commencement 

 of, 41 



most primitive habits of, 08 



primitive characters of, 6S 

 Man, Aurignacian, 141 



effects of loss of teeth in, 169 



European, teeth of, 149 



Heidelberg, 136 



milk teeth in, 241 



Xeandertal, 140, 142 



origin of, 136 



