MESOZOIC TIME — CRETACEOUS. 



851 



Pterosaurs of several species have been discovered in western Kansas, in 

 the " Middle " Cretaceous, the first by Marsh in 1870; two had an expanse of 

 wings of 20 to 25 feet, and another of 18 feet. They are toothless, unlike the 

 foreign species, and are named by Marsh Pteranodonts ; anodont from the 



1430, 1431. 



1431a 



14316 



BiED. — Fig-. 1480, Ichthyornis victor, skeleton, restored (x^); 1431 a, b, c, d, I. dlspar : a, left lower jaw-, side 

 view (xf) ; 6, same, top view ; c, cervical vertebra, side view (xf) ; d, same, front yiew. Marsh. 



