﻿PLATE LXII. 



Concavum-zone. 



SONNINIA MARGINATA, 8. Buckmail. 



Side view of a specimen showing spines in the inner whorls, followed, on 

 the last two whorls, by nearly upright ribs. Bradford Abbas, Dorset. My 

 Collection. (Page 321.) 



(The plate is a copy of a photograph the exact natural size of the fossil.) 



