FOSSILS OF THE O'OLITE. 



61 



These small ani- 

 mals, the lower 

 jaw of one of 

 which is repre- 

 sented (fig. 93), 

 belong to the mar- < 

 supials ; that is, 

 one of the most 

 imperfect orders 



Of the claSS. *Yg.93. Taw of the Dide'lphusBuckla'ndU (twice the natural size) 



Bones of large animals, thought 

 to belong to the order of ceta' 

 cea, are also found in the o'oli- 

 tic strata. 



51. Con'ifers, which are but 

 rarely found beyond the shell- 

 limestones, are abundantly 

 met with in the o'olite series, 

 of particular genera (fig. 94), 

 with Cyca'dese (fig. 95) 

 ferns of different species, dif- 

 fering from all those met in 

 more ancient strata, and finally 

 a true equisetum (fig. 96). 



Fig. 95. t'tero'phyllum Williamso'ms. 



51 What fossil plants are found in the lower o'olite ? 

 6 



\ 8 R A .* 



or THE 



NIYERSITY J 



.. 



