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FOSSIL REPTILE GALLERY. 
Q 2 
H a 
room ; the original being in the Brussels Natural History 
Museum. 
Nearly allied to the gigantic Iguanodon is the diminutive 
Hypsilophodon foxi, of which 
remains are also found in 
the Wealden formation of 
the Isle of Wight. Both 
habitually walked in the up- 
right posture on their three- 
toed hind-limbs. In the centre 
of this gallery is placed a large 
portion of the skeleton of a 
gigantic Dinosaur {Cetiosaurus 
leedsi) from the Upper Jurassic 
Oxford Clay near Peter- 
borough. This Dinosaur is 
nearly allied to the North 
American Diplodociis, of which, 
as mentioned above, the model 
of a complete skeleton is ex- 
hibited in the recent Eeptile 
Gallery (see page 52). Both 
Cetiosaurus and Diplodocus re- 
sembled Brontosauriis (fig. 51) 
in the extremely small size of 
their skulls. 
At the eastern end of the 
gallery are the Pterosauria 
or Ornithosauria, commonly 
called Pterodactyles or Flying 
Eeptiles, of which the most 
gigantic representatives were 
the species of Pteranodon 
from the Upper Cretaceous 
of Kansas (fig. 52). At the 
west end is the nearly 
complete skeleton of Pariasaurus (fig. 53) from the Karoo 
formation (Trias) of South Africa, one of the most remark- 
able of fossil Eeptiles, which also occurs in Eussia. It 
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