78 University of Kansas Geological Survey. 



fore back, but becomes more transverse below. The shaft is 

 hollow, with firm walls, not more than one third of an inch in 

 thickness. The portion preserved measures 210 mm -" 



From the Upper Cretaceous of Kansas there has been but a 

 single species of Crocodile described, and I am not aware that 

 there has ever been any other bones of these animals discovered 

 than the single vertebra which served as the type of this 

 species. Its horizon is the Benton, and the description by Cope 

 is as follows : 



Hyposaurus vebbil Cope. 



Proceedings of the Amer. Phil. Soc , 1872, p. 310. 



"An anterior cervical vertebra presents the following charac- 

 teristics. It is that one in which the parapophysis occupies a 

 position opposite the lower third of the vertical diameter. Its 

 centrum is stout in form ; the articular faces but little concave ; 

 the posterior a little more so than the anterior. The anterior is 

 almost regularly hexagonal ; the posterior subround, a little 

 deeper than wide. The inferior surface possesses a strong, 

 obtuse, median carina, which disappears in front of the pos- 

 terior margin. Anteriorly, it terminates in a short, obtuse 

 hypapophysis. The suture of the neural arch is very coarse. 

 Surface of the bone smooth. 



Measurements . 



Length of the centrum 37mm. 



Diameter of the centrum anteriorly: 



Vertical 32 " 



Horizontal 31 " 



Diameter of the centrum posteriorly: 



Vertical 32 " 



Horizontal 31 " 



Length of the surface of the parapophysis 15 " 



"As compared with the H. rogersii, of the New Jersey Cre- 

 taceous, this vertebra is shorter and stouter, and the extremi- 

 ties less concave ; the suture for the neural spine is much 

 coarser. 



"This Crocodile was discovered in a bluish stratum, encoun- 

 tered in digging a well in Brook ville, Kan." 



