GEOLOGY. 



59 



septarium from the Kimmeridge clay of Swindon, Wilts, containing 

 the femur, pelvis, and a large portion of the skeleton of another huge 

 Dinosaur,* named Omosaurus armaius by Prof. Owen. 



The femur is over 4 feet in length, and the humerus nearly 3 feet 

 and enormously broad. The bones of the fore-limb and many of the 

 vertebrae of Omosaurus were found in the clay near the chief mass. 



Numerous other fine Dinosaurian remains are to be seen in these 

 cases. As we do not know the teeth of many of these huge reptiles, 

 we cannot speak positively as to their habits ; but it is certain 

 that from the Trias to the Chalk two groups have existed, side by 

 side, one having a carnivorous dentition, and the other being her- 

 bivorous. The Teratosaurus of the Trias of Stuttgart and the 

 JLyco&aurus and Cynodraco from the Cape; the Megalosaurus of the 



Fig. 28.— Profile of Cranium and Lower Jaw of Megalosaurus, restored in outline (after 

 Professor Phillips), from the Oolite. 



Oolitic and Wealden strata were all carnivores. But of Pola- 

 aanthus, Omosaurus (Wall-case No. 4), Hylceosaurus (Wall-case 

 No. 5), and Cetiosaurus\ we have no direct dental evidence. No 

 doubt, as amongst the Mammalia at the present day, the majority were 

 vegetable-feeders, and the minority were predaceous in habit. 



In Table-case No. 12 are placed two nearly entire skeletons of a 

 small, but very remarkable amphibious reptile, named Neusticosaurus 

 pusillus, from the Trias near Stuttgart, Germany ; having affinities 

 with both the terrestrial and marine lizards. In the long neck and form 

 of the fore-limb this reptile approaches Plesiosaurus ; in the hind- 

 limb it presents affinities with the earliest of the fossil Crocodiles. 



In Wall-case No. 9, and Table-cases 23 and 24, are placed the 



* This specimen forms a lasting monument to the rare scientific ability of 

 Mr. William Davies, F.G.S., Assistant in the Department of Geology, under whose 

 direction it was exhumed, and was, with the aid of the skilful mason, Mr. Barlow, 

 developed from its shapeless and intractable matrix. 



+ A single tooth has been founi in the same quarry at Enslow Bridge near 

 Oxford, from which, the bones of Celiosaurus were obtained ; it is like that of 

 Iguanodon. 



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