LIST OF ILLUSTRATIONS. 



113. Trigonocarpum Ova- 



turn 173 



114. Microscopic section of 



Foraminiferal lime- 

 stone Carboniferous, 

 North America 175 



115. Fusulina cylindrica. . . 176 



116. Group of Carbonifer- 



ous Corals 178 



117. Platycrinus triconta- 



dactylus 179 



118. Pentremites pyrifor- 



mis and P. conoideus 180 



119. Archceocidaris ellipti- 



cus 181 



120. Spirorbis Carbonar- 



ms 182 



121. Prestwichia rotund- 



data t 183 



122. Group of Carbonifer- 



ous Crustaceans 184 



123. Cyclophthalmus senior 185 



124. Xylobius sigillarice. . . 186 



125. Haplophlebium Barn- 



esi 186 



126. Group of Carbonifer- 



ous Polyzoa 187 



127. Group of Carbonifer- 



ous Brachiopoda. . . . 189 



128. Pupa vetusta 190 



129. Goniatites Fosse? 191 



130. Amblypterus macrop- 



terus 192 



131. Cochliodus contortus. 193 



132. Anthracosaurus Rus- 



selli 194 



!33- Generalized section of 



the Permian rocks.. 199 



134. Walchia piniformis. . . 200 



135. Group of Permian 



Brachiopods 202 



136. Area antiqua 203 



137. Platysomus gibbosus 203 



138. Protorosaurus Speneri 205 



139. Generalized section of 



the Triassic rocks... 211 



140. Zamia spiralis 213 



141. Triassic Conifers and 



Cycads 214 



142. Enerinus liliiformis. . . 215 



143. Aspidura toricata 215 



144. Group of Triassic Bi- 



valves 2j6 



145. Ceratites nodosus 218 



146. 



147. 

 148. 



149. 

 150. 

 151. 

 152. 



153. 

 154. 



155. 



156. 

 157. 

 158. 

 159. 

 160. 



161. 

 162. 



163. 



164. 

 165. 



166. 

 167. 

 168. 

 169. 

 170. 



171. 

 172. 

 173. 



174. 

 175. 

 176. 



Tooth of Ceratodus 



seratus and C. altus 220 

 Ceratodus Fosteri.... 221 

 Footprints of Cheiro- 



therium ............. 222 



Section of tooth of 



Labyrinthodont ...... 223 



Skull of Mastodon- 



saurus .............. 223 



Skull of Rhynchosau- 



rus ................. 224 



Belodon, Nothosaurus, 



Palceosaurus, etc., . . . 225 

 Placodus gigas ....... 226 



Skulls of Dicynodon 



and Oudenodon. . . . 227 

 Supposed footprint of 



Bird, from the Trias 



of Connecticut ...... 228 



Lower jaw of Droma- 



therium syhestre ---- 229 

 Molar tooth of Micro- 



lestes antiquus ...... 229 



'Myrmecobius fasci- 



atus ................ 230 



Generalized section of 



the Juriassic rocks.. 236 

 Mantellia megaloph- 

 lla ................. 237 



238 



Thecosmilia annularis 

 Pentacrinus fasciculo- 



sus ................. 239 



Hemicidaris crenula- 



ris ................. 240 



Eryon arctiformis ---- 241 



Group of Jurassic 



Brachiopods ...... . . 242 



Ostrea Marshii. ...... .243 



Gryphcea incurva ..... 243 



Diceras arietina ...... 243 



Nerincea Goodhallii... 244 

 Ammonites Humph- 



resianus ............ 245 



Ammonites bifrons... 245 

 Beloteuthis subcostata 247 

 Belemnite restored; 



diagram of Belem- 



nite ; Belemnites can- 



aliculata ............ 248 



Tetragonolepsis ...... 248 



Aerodus nobilis ...... 249 



Ichthyosaurus com- 



munis ............... 249 



