Am. Jour. Sci., Vol. XXXIII, 1887. Plate 
NG 
Tp 
i iW? 
~ EDs of 4 Dy ¥ 
MU RO Cin 
S 
yy Nile uh y) 
IS stage = is a Sap 
ey (EB 
fe Z 
= 4d 
AMERICAN JURASSIC MAMMALS. 
