CONTENTS. vii 



PAGE 



land and water character of animal kingdom. 312. Chelonian. 

 reptiles (tortoises). 313. Foot-tracks of birds. 314. Synopsis 

 of animal kingdom. SECOND TRIASSIC PERIOD : 315. Mineral 

 character of this stage animal genera created and revived. 

 316. Outlines of land and water animal kingdom. 317. 

 Generic synopsis. . . . . . . . .49 



CHAP. V. 318. Convulsion which closed the age. Jurassic Age. 

 319. Division of Jurassic formations into ten stages by 

 M. D'Orbigny. 320. Nomenclature and thickness of the stages. 

 321. Section of the strata from the Vosges towards Paris. 

 322. State of the earth in the Jurassic age. 323. Jurassic age 

 zoologically distinguished from the Triassic. 324. Distribution 

 of the species into ten stages. 325. General inference respecting 

 the distribution of specific forms. 326. Geography of Europe in 

 Jurassic age D'Orbigny's map. 327. The Anglo-Parisian basin. 

 328. The Pyrenean basin. 329. The Mediterranean basin. 

 330. Variation of the shores of these seas from period to period. 

 331. Discordances and isolation of the strata. 332. Corre- 

 sponding observations on the organic deposits 333. Variations of 

 the outlines of land during this age. 334. Change of condition 

 of land between Toulon and Inrispruck. 335. Accurate know- 

 ledge of the Jurassic geography. 336. Elie de Beaumont's 

 Jurassic map. 337. Ichthyosaurus, Plesiosaurus, and Ptero- 

 dactyle. 338. Other animals of the Jurassic age. 339. Coral 

 reefs. 340. Insects. 341. The vegetable kingdom. FIRST 

 JURASSIC PERIOD : 342. Convulsion that closed the Triassic age. 

 343. First Jurassic stage determined by discordances and 

 isolation of stratification. 344. Extent of the seas in Western 

 Europe remarkable discordances of stratification on the Alps. 

 345. Synopsis of the animal kingdom. 346. Reptiles, fishes 

 and insects. 347. Convulsion which closed the period. SECOND 

 JURASSIC PERIOD : 348. Mineral character of this stage. 349. 

 Synopsis of animal kingdom. 350. Marine fauna. 351. No 

 traces of terrestrial fauna. 352. Vegetation of the period . . 65 



CHAP. VI. THIRD JURASSIC PERIOD : 353. Mineral character of this 

 stage. 354. Synopsis of the animal kingdom. 355. Outlines of 

 land and Avater. 356. Land animals and vegetation. FOURTH 

 JURASSIC PERIOD : 357. Mineral character of the stage. 358. 

 Synopsis of the animal kingdom; 359. Land fauna. FIFTH 

 JURASSIC PERIOD: 360. Mineral character of the stage. 361. 

 Synopsis of the animal kingdom. 362. Examples of the fauna. 

 363. Traces of land fauna Phascolotherium and Thylaco- 

 therium. 364. Examples of the flora. 365. Convulsion which 

 closed the period. SIXTH JURASSIC PERIOD : 366. Mineral cha- 

 racter of the stage. 367. Synopsis of the animal kingdom 

 disappearance of the Ichthyosauri. 368. Remarkable changes 

 in the outlines of land and water. 369. Extent of the Medi- 

 terranean basin submersion of the great Russian continent. 

 SEVENTH JURASSIC PERIOD : 370. Mineral character of this 

 stage. 371. Synopsis of the animal kingdom. 372. Creation 

 of several orders of insects. 373. Specific forms of Mollusca 



