LIST OF ILLUSTRxVTIONS xv 



FIG. . PAGE 



69. Jaw of Triconodon mordax 228 



70. Drawing of the Fossil Lizard-tailed Bird .... 230 



71. Skull of Arcliccoptcryxsiemensi 231 



72. Skeleton of Phenacodus primwvus 232 



73. Skeleton of Uintatherium ingens 236 



74. Skull of Uintatherium cornutum 237 



75. Skeleton of Titanotherium rohustum 238 



76. Skull of Arsinoitheriiim zitteli 240 



77. Skeleton of a Creodont 242 



78. Skeleton of Hyopotamus brachyrhynchus 243 



79. Anoplotherium commune 244 



80. Palwotheriiim magnum 244 



81. Skull of Moeriilierium hjonsi 244 



82. Skulls of Ancestral Elephants 246 



83. Skeleton of Tetrahelodon angvstidens 246 



84. Probable Appearance of Tetrahelodon augustidens . . 246 



85. Skeleton of Mastodon americanus 247 



^Q. Skeleton of Mammoth Elephas promigenius .... 249 



87. Skeleton of Toxodon platensis 250 



S8. Skeleton of Glyptodon clavipeR 253 



89. Probable Appearance of tlio Giant Ground-sloth . . 254 



90. Mylodon rohustus 254 



91. Skeleton of Scelidotlierium leptocephalum .... 255 



92. Skull of an Extinct Marsupial 257 



93. Skull of Thylacoleo carnifex 258 



94. Sabre-toothed Tiger 284 



95. Skeleton of Giant Deer 284 



96. Conocoryphe sultzeri .» 287 



97. Paradonides hohemiciis . ♦ 287 



98. Acidaspis dufrenoyi 288 



99. Ceratites nodosus 289 



100. Trachyceras aon 28 J 



101. Crioceras emerici 289 



102. Heieroceras emerici 289 



103. Macroscaphites ivanii . . o 290 



104. Hamites rotundus -^"^^ 



105. Ptychoceras emericiciniim '^•^^ 



