REPTILIA. 
37 
Order VIII.— ICHTHYOPTERYGIA. 
Fish-shaped or porpoise-shaped aquatic reptiles lived 
with the Sauropterygia and were equally cosmopolitan. 
t£ 
a 
They form the Order of Ichthyosauria (‘‘ fish-lizards ”) or 
Ichthyopterygia (“ fish-finned and the toe-bones in the 
paddles are not only pressed together into a mosaic, but are 
W all-cases 
15-17. 
Stands 
A-C. 
Case H. 
