TJ. S. GEOLOGICAL SURVEY 



MONOGRAPH 55 PLATE LXVI 



SKULL AND JAW REFERRED:.T0 STHENODECTES INCISIVUS 



A, Referred skull (Field Mus. 12168) and lower jaw (Field Mus. 12166), "Amynodon beds," level Uinta B 2, drav 

 \ fourth natural size; B, the same skull, basal view; C, the same jaw, top view 



