BROILIELLUS, A NEW GENUS OF AMPHIBIANS FROM 

 THE PERMIAN OF TEXAS 



S. W. WILLISTON 



University of Chicago 



The material upon which this genus is based comprises two 

 specimens, Nos. 684 and 685, University of Chicago, collected by 

 Mr. Paul Miller on Timber Creek, Texas. Both specimens, when 

 found, were almost completely inclosed in hard clay nodules. The 

 matrix has been removed from the surface of the bones very cleanly, 

 but no attempt has been made to separate any of them. The 

 larger and more complete of the two specimens, No. 284, the holo- 

 type, includes the complete skull, but very slightly distorted, 

 connected with the complete series of dorsal shields; the right 

 humerus in position with the somewhat crushed scapula; the 

 incomplete clavicular girdle; the incomplete left humerus and a 

 part of the hand; the right femur, tibia, fibula, three tarsals, and 

 two metatarsals. There is also a fragment of the pelvis. Specimen 

 No. 285, of slightly smaller size, has the complete skull less com- 

 pressed than that of the other specimen. It also is connected with 

 the complete series of dorsal shields, and their corresponding 

 vertebrae; also the clavicular girdle is in place; and an imperfect 

 humerus. Only slight indications of the ribs are present in either 

 specimen. 



SKULL 



Few other specimens of amphibian skulls in the University 

 collection are in better preservation. The skull is sub-triangular 

 in shape, a little longer than broad, with the face broadly rounded 

 in front. The nares are rather large; they are situated near the 

 anterior extremity of the face, and are separated by about their 

 own diameter. The orbits are rather large, nearly circular in 

 outline, with their hind borders a little beyond the middle of the 

 skull anteroposteriorly. In the middle of each orbit of the larger 



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