1915.] Matthew and Granger, Lower Eocene Wasatch and Wind River Faunas. 437 
Ae 
~~ (P 
Fig. 5. Fig. 6. 
Fig. 5. Pelycodus ralstoni, inner, outer and crown views of lower jaw fragment. Sand 
Coulée beds, Clark Fork basin, Wyoming. : 
Fig. 6. Pelycodus ralstoni, inner, outer and crown views of lower jaw fragment. Sand 
Coulée beds, Clark Fork basin, Wyoming. 
To this species are referred a large number of jaws and jaw fragments 
from the same horizon as the type. 
/ ; . IN OSL OY, 
fA a ae 
Fig.7. Pelycodus trigonodus, upper jaw of type specimen, outer and crown views. Gray 
Bull beds, Bighorn basin, Wyoming. 
