93 
AMMONITES laevigatus. 
TAB. DXLIX.— ^g. 1. 
Spec. Char. Discoid, smooth ; inner whorls 
nearly concealed ; margin obtuse ; aperture 
very narrow. 
One of the very few Ammonites that have no rays nor 
undulations upon the surface. The edge is so round as 
to form a much elongated oval aperture, which is ren» 
dered sagittate by the deep impression of the preceding 
whorl ; the volutions are few, and expand rapidly. 
Found along with A. Benettianus, and several other 
fossils similar to those that occur in the marl at Folke- 
stone, at Crockerton near Warminster, by Miss E. Benett, 
whose magnificent collection of fossils it helps to enrich. 
We are also indebted to Dr. Fitton for specimens found 
at Cheriton near Sandgate, Kent, in clay used for making 
tiles. They are casts in pyrites. 
