R. S. Lull — Dinosaurian Distribution. 31 



North Carolina and Georgia have yielded Trachodons of 

 Magothy (Senonian) age. 



The great culmination of the group, in which the older types 

 were joined by the remarkable Ceratopsia, occurred toward the 

 close of the Cretaceous in the area lying just eastward of the 

 Rocky Mountains and extending from New Mexico on the 

 south to Alberta on the north, perhaps beyond. 



In the Old World I have searched in vain for traces of 

 Orthopoda before the Lias. Beasley, Soil as and others have 

 described many fossil footprints from beds ranging from the 

 Bunter to the Upper Keuper, including some undoubted 

 dinosaurian tracks (Sollas 1879, pp. 511-516) resembling those of 

 Anchisauripus (Bronlozoum, part) (Lull 1904, p. 486) of the 

 Connecticut formation. There is none among them in any way 

 comparable with Anoinmpus (Lull 1904, p. 500) of the New 

 World. Beasley (1907, p. 167-168) is inclined to think that he 

 has in Chirotherium storetonense from near Liverpool the foot- 

 print of an herbivore. That one may readily consent to, but the 

 foot in no way resembles that of a dinosaur and the tracks are 

 generally referred to unknown labyrinthodonts. 



In the English Lias the first Orthopod appears in the form 

 of the armored Scelidosaurus followed in the Oxfordian by 

 Omosaurus and later by Echinodon. Recorded specimens of 

 armored forms are entirely confined to England during Jurassic 

 time and not until the Wealden do we find their remains on the 

 continent. With the Cenomanian they apparently forsake their 

 earlier home entirely for the continent, culminating in 

 Struthiosaurus and Hoplosaurus of Austro-Hungary and 

 southern France. 



The unarmored Orthopoda, the Ornithopoda, begin their 

 Old World career simultaneously in England and Portugal in 

 beds of Oxfordian age, but are not numerous during the 

 Jurassic. The Wealden, however, brings in a great many 

 species, some in wonderful preservation. Their subsequent 

 history is much like that of the armored types, culminating 

 in Austro-Hungary, France and Belgium. 



It will be observed that no mention is made of the Asian 

 continent north of India — the ancient Ajigara-Jand. Thus far 

 our records show absolutely no trace of dinosaurian remains 

 from any part of this vast area. Professor Marsh (1897, pp. 

 413-414) says: "In St Petersburg I hoped to find many dino- 

 saurian remains, as here had been brought together an 

 abundance of fossil treasures from various parts of the Russian 

 Empire, which I knew must contain many forms of this group. 

 In the four principal museums of the city, however, I could 

 find no bones of Dinosaurs on exhibition, nor could I learn 

 from any of the museum authorities that such remains had 



