432 ON- A ^^EW IGUANODON- FOUND IN THE KIMMEKIDGE CLAY." 



collection of fossils from the Lower Greensand of Paringdon, made 

 Tby Mr. Davey, of "Wantage, and now in the Oxford Museum, there 

 are two teeth of Iguanodon ; but whether they belong to the Lower 

 Greensand, or whether they are to be classed with the numerous 

 derived fossils found in those beds, it is difficult to say. As, however, 

 they are not much worn, they may be of Lower-Greenland age. 



The presence of drifted wood and of the Iguanodon in the Kim- 

 meridge Clay of this district, and of large Dinosaurs at Swindon, 

 together with the great thinning of this formation as it trends to 

 the south-west, render it probable that land in that direction was 

 not far distant, and that that land may have been the same as that 

 of the proximity of which we have more distinct evidence in the 

 many quartz, slate, and metamorphic rock-pebbles present in the 

 Lower Greensand of Faringdon, a deposit evidently formed near an 

 old shore. This land, since submerged and covered by upper Cre- 

 taceous strata, was in all probability the prolongation of the old 

 axis of the Mendip and Ardennes, the elevation of which took place 

 in Permian or Triassic times. 



My friend Mr. Hulke has kindly taken charge of this Kimmeridge 

 Iguanodon ; and in his hands I feel sure that its structural peculi- 

 arities and relationship will be accurately determined and esta- 

 blished. 



(Por Discussion see page 456.) 



