112 



GEOLOGY OF THE ISLE OF WIGHT. 



some of the eocene deposits, occur at Binstead, 

 but I have not observed them in any considerable 

 number. 



Fossil Turtles. — Waterworn fragments of the 

 bony plates of chelonian reptiles, which, from their 

 granulated or cancellated dermal surface, appear 



L1GN. ti .— S1XKK.U, PLATE <)l A FRESHWATER TURTLE, FROM BINSTEAn. 



(One-third linear, the natural size.) 



The outline, a, represents the corresponding portion of the plastron. 



to have belonged to the group of soft freshwater 

 tint It's called Trionyx, are often found associated 

 with the shells above described, in the tertiary 



