DEPOSITS ELSEWHERE THAN IN SOUTH AFRICA. 363 



did not seem to him to warrant the removal of that genus from the 

 Dinosauria. 



The President (Prof. Duncan) remarked on the interesting mode 

 in which these ' Keptilian jaws seem to foreshadow those of the 

 Mammalia. During the existence of the great land surface which 

 persisted through the Carboniferous, the Permian, and the Trias, 

 many land reptiles lived upon it, and doubtless developed those cha- 

 racters which seem to be Mammalian, just as in more recent times 

 we have similar characters developed under similar conditions in the 

 Marsupial Mammalia. 



Mr. Etheridge stated that the deposits from which the Bristol 

 Saurians were obtained certainly belonged to the middle of the 

 British Triassic series, forming the base of the Keuper. 



The Author stated that the teeth of Megalosaurus among the 

 Dinosaurs approached nearest to those of his Theriodontia, but they 

 are not Thecodont. Megalosaurus had amphiplatyan vertebrae, 

 whilst those of the Theriodonts were biconcave. Considering the 

 fragmentary evidence upon which the order Dinosauria was first 

 established, and the fact of its being now generally accepted, ho 

 did not think that the argument from imperfect evidence against 

 the order Theriodontia was of much value. 



Q. J. G. S. No. 127. 2 c 



