INDEX 



Teeth — (Continued) 



141, 143; see also Piltdown 



man 

 of ganoids, 23, Fig. 18, following 



30 

 of gorilla. Fig. 72, 137, Fig. 74, 



140, Fig. 79, 150; of gorilla 

 child. Fig. 76, 146 



of Heidelberg man, 143, Fig. 37, 



61, Fig. 80, 151 

 of Hindu, modern. Fig. 80, 151 

 of Homo heidelbergensis, see 



Heidelberg man 

 of Homo neandertkalensis, see 



Neanderthal man 

 of Homo sapiens. Fig. 37, 61, 



Fig. 38, 62, Fig. 72, 137, Fig. 



74, 140, Fig. 75, 144, Fig. 



76, 146, Fig. 78, 148, Fig. 80, 



151 

 of Indrodon, Fig. 38, 62 

 of lamprey, 98, Fig. 60, 99 

 of Leipsanolestes, Fig. 38, 62 

 of Loxomma allmani. Fig. 18, 



following 30 

 of Michrochoerus, Fig. 78, 148 

 of Mycterosaurus, Fig. 77, 147 

 of Neanderthal man (Ehrings- 



dorf). Fig. 72, 137, Fig. 75, 



144, Fig. 80, 151 

 of Neanderthal man (Le Mous- 



tier), Fig. 38, 62, Fig. 72. 



137, Fig. 74, 140, Fig. 78, 148, 



Fig. 80, 151 

 of orang, Fig. 79, 150 

 of pantotherian (pro-placental,) 



Fig. 77, 147 

 of Parapithecus, Fig. 37, 61 

 of Pelycodus, Fig. 37, 61 

 of Piltdown man, 72; canine of, 



141, 143; Fig. 37, 61, Fig. 

 38, 62, Fig. 41, facing 66; 

 see also Eoanthropus 



of placental mammals, 52, 53 

 of Polyplocodus, Fig. 18, follow- 

 ing 30 

 of Pronycficebus, Fig. 78, 148 

 of Propliopithecus, Fig. 37, 61 

 of Scylacosaurus, Fig. 77, 147 

 of Seymouria, 118 

 of shark, most primitive 

 (Chlamydoselachus), Fig. 5, 

 facing 12; origin of, from 

 shagreen, 19; three stages in 

 development of. Fig. 60, 99; 



nearer to those of man than 

 to any known teeth of 

 invertebrates, 102; develop- 

 ment of, 100; in typical 

 sharks, 109; not separately 

 connected with jaws, 109; 

 manner of replacement of, 

 117 

 of Sivapitkecus, Fig. 37, 61; 



Fig. 75, 144 

 of reptiles. Fig. 53, 85; pro- 

 progressive changes in, 115 

 of triconodont mammals, 136 



Temporal bone, socket of lower 

 jaw in, 39; squamous part of, 

 83; genesis of, in anthropoids 

 and man, 88. 



Temporal fossa, foreshadowed in 

 Mycterosaurus, 34; first ap- 

 pearance of. Fig. 48, 78, 116; 

 of Scymnognathus and Icti- 

 dopsis. Fig. 20, 35; origin of, 

 89; later development of, 90 



Temporal muscle, relation to 

 development of temporal fos- 

 sa. Fig. 48, 78, 116; evolution, 

 of. Fig. 61, 103 



Temporal region of skull, effect 

 on the face of, 170 



Temporo-mandibular articula- 

 tion, 87 



Temporo-mandibular series, re- 

 duction of. Fig. 52, 82, 88 



Tenrec, of Madagascar, 52. 



Tessera, primitive mouth of. Fig. 

 1, 5 



Tetrapods, bony mask of the 

 earliest, 28 



Therapsids, Ictidopsis, skull of. 

 Fig. 20, 35; Scymnognathus, 

 skull of. Fig. 20, 35. 



Theromorph reptiles, see Reptiles, 

 mammal-like 



Thylacinus (Marsupial Wolf), 

 dentary of. Fig. 21, 37; skull 

 of (under side) Fig. 53, 85 



Thymus gland, origin in branchial 

 arches of, 126 



Thyroid gland, origin in branchial 

 arches of, 126; effects of 

 deficiency in, 171, 237; effect 

 on growth of face of, 232 



Tilney, Frederick, on evolution of 

 primate brain, 63 



Tongue, possible part in develop- 



293 



