INDEX. 



Aceratherium, 75. 

 Achyrodon, 24, 29. 

 Adapis, 158. 

 Allodon, 104. 

 Allotheria, 11, 101. 

 Amblotherium, 24, 29. 

 Amblypocla, 14, 164. 

 Ameghino, 4, 57, 201. 

 Amphitherium, 23, 24, 27- 

 Anacodon, 133. 

 Analogy, 229. 

 Anaptomorphus, 89, 158. 

 Ancylopoda, 15, 184. 

 Anisognathisni (overhang), 43*, 215. 

 Antecrochet, 73. 

 Anthropoidea, 14, 157. 

 Apternodus, 121. 

 Arctocyon, 133. 

 Artiodactyla, 14, 84, 171. 

 Astrapotheria, 16. 



Bathyopsis, 168. 



Basin-shaped molars, 103, 130, 131, 142, 



206. 



Bilophodont, 171*. 

 Bolodon, 24, 103, 104. 

 Brachyodont, 163. 

 Broom, 101. 

 Bunodont, 163. 

 Bunoid (defined), 89. 

 Bunoselenodont, 163. 



Ctenogenetic modifications, 54. 

 Cpenolestes, 112. 

 Calcochloris, 81. 

 Canine (bi-fanged), 194 1 . 

 Carnassial teeth, 122, 123, 135. 

 Carnivora, 12, 131. 

 Carnivora Fissipedia, 131, 142. 

 Cement lakes, 73, 86. 



Centetes, 117, 11!)- 126, 26, 227. 



Cetacea, 37, 101, 19(1. 



Chalicotherium, 87, 184. 



Cheiroptera, 12, 119 (bat), 121, 129. 



Chirox, 103, 104. 



Chrysochloris, 64, 81, 119-126, 227. 



Cingulum, 33, 89. 



Classification, Mammalia, 11. 



Como Beds, 78 1 . 



Conacodon, 1<>">. 



Condylarthra, 14, 168. 



Concrescence theory, 57-59, 202. 



-cone, 82. 



Convergent evolution, 139. 



Cope, 1, 2, 4, 5, 38 l . 



Coryphodon, 166. 



Creodonta, 12, 132-139. 



Cretaceous (Laramie) mammals, 95, 



219. 



Crochet, 73, 229. 

 Ctenacodon, 102. 

 Cusp development, 42. 

 Cusp differentiation theory, 56. 

 Cusps, nomenclature, 41. 

 Cynognathus, 91. 



Dasyurid;v, 109. 



Dermoptera, 12. 



Determinate variation, 233. 



Diademodon, 92. 



Dicrocynodon (Diplocynodon), 219. 



Didelphia, 100. 



Didelphys, 108. 



Dilambdodout Insectivores, 117, 2K>. 



Diplocynodon, 28, 219. 



Diprotodon, 1 14. 



Diprotodontia, 12. 



Dissacus, 133, 216. 



Docodon, 28. 



Dog, 213- 



