182 University of Kansas Geological Survey. 



oval, thus resembling the P. ictericus. The cup and ball of the 

 penultimate cervical are a little more transverse than those of 

 the fourth dorsal, and none of them are excavated above for 

 the neural canal. The last cervical is strongly keeled on the 

 middle line below, and with a short, obtuse hypapophysis 

 marking the beginning of the posterior third of the length ; 

 the median line of the first dorsal has an obtuse ridge. There 

 is no keel on the fourth dorsal, but the lower surface is concave 

 on the antero-posterior direction. The diapophysis on the last 

 two cervical and first three dorsal vertebrae have great vertical 

 extent ; the articular surface for the rib is not bent at right 

 angles on the first dorsal. Neural arches and spines are well 

 preserved in most of the specimens. There is no trace of a 

 zygantrum. The neural spines are flat, and have considerable 

 antero-posterior extent on cervical as well as dorsal vertebras, 

 and are truncate above. First dorsal bears a long, strong rib." 



"Transverse diameter of cup of penultimate cervical vertebra 51mm. 



Length of centrum of fourth dorsal, without ball 72 



Vertical diameter of the ball 45 



Transverse diameter of same 65 



Platecarpus glaiidiferus. 



Liodon glancliferiis Cope, Proc. Amer. Phil. Soc, Dec. 1871. 

 Platecarpus glandiferus Cope, Cret. Vert., 156, 168, pi. xxvi, ff. 13, 14. 



This species was based upon very slight material. Neverthe- 

 less it is possible that it may again be recognized. The two 

 cervical vertebrae upon which it is based were collected from 

 "lower Butte creek" and "one mile southeast of Sheridan." 

 If the locality is accurately given, the second specimen was 

 assuredly from the Fort Pierre. The other specimen must have 

 been in the Niobrara. Unfortunately it is not stated which of 

 the vertebrae was from the North Fork and which from Butte 

 creek. I doubt that the vertebra? are sufficiently characteristic 

 to positively determine the species, but they may be. I give 

 Cope's description and a reproduction of his figures : 



"One is an anterior, the other a posterior cervical vertebra. 

 The articular sufaces are transversely elliptic, and completely 

 rounded above ; that is, neither truncated nor excavated for the 



