ln<h-,v 



Kurypterids, 45, 76,* 77. 

 Extinction of animals, 271, 272. 



Fins, origin of, 101.* 

 Fish beds, Carboniferous, 92, 93. 

 Fishes, early, 85, 89, 97. 

 Flying animals, 213. 

 Footprints. See Tracks. 

 Korammifera, 51. 

 Fossil, definition of, 8. 

 Fossils, deductions from, 19, 20, 22, 

 23. 



Gastropoda, 44. 

 Generalized animals, 221. 

 Geological time, 56. 

 Giraffe camel, 24 i. 

 Glyptodon, 249. 

 Graptolites, 71.* 

 Green River shales, 202. 

 Ground sloth, 249, 253, 254, 255, 

 257. 



Hesperornis, 181,* 182, 183. 

 Horse, 249, 269. 



Eocene, 227. 



Miocene, 242, 244. 



Pleistocene, 258, 259. 



Ichthyosaurs, 136, 137, 138, 147. 



appearance, 137. 



young, 147. 

 Ichthyornis, 184, 185. 

 Impressions of animals, 13. 

 Insects, fossil, 12. 



localities for, 12. 

 Invertebrates, 41. 



Jellyfish, fossil, 11, 63. 

 Jurassic life, 176. 



mammals, 187-192. 



period, 175. 



plants, 172. 



King-crab, 3, 64.* 



Labyrinthodonta. See Stegoceph- 



ala, 118. 

 Labyrinthodout, restoration, 125. 



habits, 1-25. 



Lamellibranchiata, 44. 

 Lampreys, 38, 39,* 85, 96. 

 Lancelot, 37. 

 Laosaurus, 172. 

 Leather-turtle, 198-200.* 

 I.cpidodendron, 122, 142. 

 Lepidophytes, 122. 

 Life, early, 58, 59, 60, 61, f,2. 



progress of. See Progress of 



life. 

 Llama, 244. 



ancestors, 242. 

 Lophiomys, 119. 

 Lung-fishes, 98,* 99. 



Mammals, Cretaceous, 192, 217. 



earliest, 142, 185. 



Eocene, 220-232. 



Jurassic, 187-190. 



Triassic, 185-187. 

 Mammoth, 259, 260, 263,* 264, 270. 



northern, 264-267. 



range, 264. 



southern, 247, 248, 267. 

 Man, appearance, 273. 

 Mastodon, 271, 272. 



americanus, 264. 



early, 246. 



obscurus, 240. 



range, 265. 

 Megalonyx, 255. 

 Megalosaurus, 168. 

 Megatherium, 253-255. 

 Mesohippus, 242. 

 Metopias, 124. 

 Microconodon, 186. 

 Miocene period, 243. 



289 



