Wall-cases 
9 - 11 . 
Table-cases 
10 , 17 . 
Wall-case 
11 . 
Table-case 
17 . 
90 GUIDE TO THE FOSSIL REPTILES, AMPHIBIANS, FISHES. 
Liassic; and Lepridotus (Fig. 96) ranges from the Ehaetic to 
the Wealden. The powerful dentition of Lepidotus , originally 
named Sphcerodus, is particularly noteworthy; the successional 
teeth when first formed in the jaw being directed away from 
Fig. 95 .—Dapedius politics, from the Lower Lias of Lyme Regis; one- 
quarter nat. size. (Wall-case 10.) 
those they are destined to replace, and gradually turning 
through an angle of 180° as they come into use (see speci¬ 
mens in Table-case 16). 
Fig. 96 .—Lepidotus mantelli, from the Wealden of Sussex; one-tenth nat. 
size. A scale and some crushing teeth, less reduced, below. (Wall- 
case 9.) 
The Macrosemiidae are elongated fishes with small mouth, 
obtuse teeth, and extended dorsal fin, ranging from the 
Ehaetic to the Chalk. Good examples of Ophiopsis and 
Macrosemius are shown from the Lithographic Stone of 
