38 ROY L. MOODIE 



the first two of which are sculptured. These are quite large and 

 indicate the presence of limbs in species where actual limbs have 

 not been found. Humerus with endochondral ossifications resem- 

 bling the Branchiosauria. Epicondylar foramen and muscular 

 expansions present. Carpus and tarsus unossified. Femur elon- 

 gate and somewhat twisted. 



There are three species of this order known. They are: 



Diplocaulus salamandroides Cope, described from fragmentary 

 material collected in the upper carboniferous beds of Salt Creek, 

 Vermilion County, Illinois, in 1877, 



Diplocaulus limbatus Cope, described from fragmentary 

 material from the Permian of Texas. Further descriptions and 

 figures of the skull, girdles and limb bones given by Williston in 

 1909. 



Diplocaulus magnicornis Cope, described from a nearly com- 

 plete cranium from the Permian of Texas. 



Closely related forms of this group are possibly to be found in 

 the Crossotelidae from the Permian of Oklahoma, but the group 

 is as yet very imperfectly known. 



BIBLIOGRAPHY 



Broom, R. 1910 Comparison of the Permian reptiles of North America with 

 those of South Africa. Bull. Amer. Mus. Nat. Hist., vol. 28, p. 214. 



Cope, E. D. 1882 Third contribution to the history of the vertebrata of the 

 Permian formation of Texas. Proc. Amer. Phil. Soc, vol. 20, p. 453. 



1881 Catalogue of vertebrata of the Permian formation of the United 

 States. Amer. Nat., vol. 15, p. 162. 



1882 Permian vertebrata, Amer. Nat., vol. 16, p. 925. 



1888 Systematic catalogue of vertebrata from the Permian. Trans. 

 Amer. Phil. Soc, vol. 16, p. 286. 



1896 The reptilian order Cotylosauria. Proc. Amer. Phil. Soc, vol. 

 34, p. 455. PI. 9. 



Miller, S. A. 1889 N. A. Geology and paleontology, p. 621. 



Case, E. C. 1900 Vertebrates from Permian bone bed, Illinois. Journ. Geol., 

 vol. 8, p. 710. 



1908 A great Permian delta and its vertebrate life. Pop. Sci. Monthly, 

 vol. 73, p. 567, figs. 12. 13. 



