58 THE WASATCH AND lUMDGER FAUN^,. 



on the inner side. The alveoli are large and shallow; in .t»25 m. scarcely 

 three find place. Near the symphysis is a smaller one \\ hit li is separated 

 by a considerable diastema from the succeeding one (perhaps abnormally). 

 The external face of the bone is rough and somewhat tubercular. 



Measurements. 



M. 



Duptli iif (Irntary at Byin|ih,v8iti OiJ3 



Depth of ilfiitary at middle - 036 



Depth of dentary at elcveiitli tooth 048 



Tbickuess of dentary at eighth tooth 018 



Pappichthys LiEvis Copc. 



Auuual Keport U. S Geol. Surv. Terrs., 1872 (1873), p. 636. 

 Plate lU, figs. 2-11. 



Represented by various fragments, including dentary and vertebral 

 bones. The former differs from that of the species just described in the 

 smaller .size of its teeth, there being six in a space occupied by but four in 

 it, at a point where the dentaries have equal depth. In other words, there 

 are four in .0250 m. The alveolar face is also much more oblique, being 

 in fact continuous with the inner face of the bone. The external face of 

 the dentary is smooth and thus different from that of P. sderops. The pre- 

 maxillary bones of opposite sides are not coossified with each other, and 

 they are narrowed fore and aft at their anterior suture. The posterior side 

 of the distal half of the bone is beveled for the anterior process of the 

 maxillary. Its alveolar face is marked for the bases of six teeth. The pos- 

 terior face of the inferior quadrate shows the symplectic to have been a 

 large bone, and to have descended nearly to the condyle of the former. 

 Some fragments of the top of the skull show that it was roughened with 

 low, obtuse ribs and lines. 



A dorsal vertebra is but little wider than deep and is truncate below, 

 presenting a prominent infero-lateral angle. 



Measurements. 



H. 



Depth of dentary near middle 0:f7 



ThiekiiesM of denlury near middle 01'2 



Depth of eentnim of vertcl)ra (l*.?9 



Width of otntnim of V(rt<bra 038 



Length of cent mm of vertebra 009 



From the bluffs of Cottonwood Creek. 



