REPTILIA 
25 
20), and have also been discovered in South America, South Wall-case>• 
Africa and India, but they are represented in the Museum m , 8 - 
J 1 Table-case 
19. 
Fig. 20. —Skull and mandible of a Theropodous Dinosaur (Geratosaurus 
nasicornis), left side-view, from the Upper Jurassic of Colorado, U.S. A. ; 
one-sixth nat. size. a. nostril; b. horn-core on nose; c. preorbital 
vacuity; d. orbit; e. lateral temporal fossa; /. vacuity in mandible ; 
t. transverse bone. (After 0. C. Marsh.) 
only by fragmentary specimens, and by a plaster cast of 
one nearly complete small skeleton ( Compsognathus longipes, 
from the Lithographic Stone of 
Bavaria, in Table-case 19). Most 
of the remains of Theropoda from 
the English Jurassic and Wealden 
rocks are referred to Megalosaurus, 
which was first found by Buckland 
in the Stonesfield Slate, near Oxford 
(Wall-case 8 and Table-case 19). 
With Megalosaurus are exhibited 
fragments of Zanclodon, Thecodonto- 
saurus (Fig. 21), and other genera 
from the Trias of England and the 
Continent, and remains of the short¬ 
necked Euskelesaurus from the Karoo Formation of South 
Africa. A small carnivorous reptile, Ornithosuchus, from the 
Triassic Sandstone of Elgin, Scotland, seems also to belong 
to the same group. 
Fig. 21.— Tooth of Theco- 
dontosaurus platyodon, 
from the Upper Trias of 
Bristol; nat.size. (Table- 
case 19.) 
