80 



FOSSIL REPTILE GALLEEY. 



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 (Oetiosaurus 

 leedsi) from the Upper Jurassic 

 Oxford Clay near Peter- 

 borough. This Dinosaur is 

 nearly allied to the North 

 American Diplodocus, of which, 

 as mentioned above, the model 

 of a complete skeleton is ex- 

 hibited in the recent Eeptile 

 Gallery (see page 52). Both 

 Oetiosaurus and Diplodocus re- 

 sembled Brontosaurus (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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