512 



THE WONDERS OF GEOLOGY. 



Lect. V. 



Freshwater shells : Paludinse, 

 Cyclades, Uniones, &c. 



Freshwater Crustaceans : Cypri- 

 otes. 



Insects : numerous genera. 



Fishes of the genera Hybodus, 

 Lepidotus, &c. 



Marine and Freshwater Chelo- 

 nians. 



Eeptiles : marine — Plesiosaurus 

 and Cetiosaurus. 



, terrestrial — Megalosaurus, 



Hylseosaurus, Iguanodon, &c 



Crocodilian Keptiles : Strepto- 

 spondylus, Pcecilopleuron, &c. 



Pterodactyles. 



Birds-? ? 



Marine shells— Trigonise, kc. 



Marine Crustaceans : — Astacidse, 



&c. 

 Insects : several genera. 

 Fishes of the genera Hybodus, 



Lepidotus, Psamniodus, &c. 

 Marine Chelonians. 



Plesiosaurus and Cetiosaurus. 



Megalosaurus. 



Pcecilopleuron. 



Pterodactyles. 



Mammalia : species of two genera. 



From this table we perceive at a glance, that the fauna 

 and flora of the dry land during the deposition of the 

 Stonesfield oolite and the Wealden strata were essentially 

 the same ; while the difference in the mollusca points out 

 the respective conditions under which the deposits took 

 place. The fresh -water shells of the Wealden indicate the 

 bed either of a delta, or of an inland lake : the marine 

 shells of the Stonesfield strata, the basin of a deep 

 ocean. Hitherto no vestiges of warm-blooded quadrupeds 

 have been found in the Wealden, nor in any other of the 

 secondary strata. The Stonesfield beds alone have afforded 

 evidence of the early existence of the higher orders of 

 vertebrated animals, allied to genera now restricted to New 

 South Wales and Van Diemen's Land. It is a most inte- 

 resting fact, as Professor Phillips was the first to remark, 

 that the organic remains with which these relics are 

 associated, also correspond with the existing forms of the 

 Australian continent and neighbouring seas ; for it is in 

 those distant latitudes that the waters are inhabited by 

 Cestracions, Trigoniae, and Terebratulae : and that the dry 

 land is clothed with Araucarise, and Cycadeou> plants. 



