THE PRE-ADAMITE EAKTH. 



Synopsis of the Animal Kingdom, (exclusive of the Annulata) during the 

 Second Jurassic Period. 



The genera of Mollusca and Radiata alone consisted of at 

 least 300 species. 



350. The seas swarmed with enormous Saurians in greater 

 numbers than ever, including new varieties of the Ichthyosauri 

 and Plesiosauri. The former had a fishlike form, and the latter a 

 neck of enormous length, by means of which it could dart its 

 mouth at a distant prey, its body still being immersed in the 

 water (fig. 155). "With these were associated the singular flying 

 reptiles, called Pterodactyles (fig. 156). A vast variety of new 

 species of fishes disputed the seas with swarms of Ammonites 

 (fig. 8), Nautili, and Belemnites ; while the coasts abounded in 

 endless varieties of shells, such as Pterocera, Ditremaria, Inocer- 

 amus, with Asteria, Ophiuri, Echinodermata (fig. 160), and 

 Foraminifera. 



351. Although all traces of terrestrial fauna have disappeared, 

 in the remains of this period there can be little doubt that insects 

 and other Annulata existed. Of Crustacea only [one genus, Coleta, 

 has been found. 



352. The land was richly clothed with vegetation, consisting 

 chiefly of ferns, cicadese, and conifers of elegant foliage, of which 

 65 species are known. 



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