Fics. 1-2. 
Fias. 3-4. 
PLATE CXIIL 
OLIGOCENE OREODONTS. SKULLS OF AGRIOCHGRUS 
Nomenclature 
Cope 1880-3 Revised 1915 
Agriochcerus guyotianus Agriocherus guyotianus 
Coloreodon macrocephalus Agriochcerus macrocephalus 
Agriocherus guyotianus (Cope, 1878). Skull and jaws, superior and anterior views, 
natural size. Specimen figured on pl. exii. Amer. Mus. No. 7402, Cope Coll., 
John Day formation of Oregon. 
Agriocherus macrocephalus (Cope, 1884). Skull, superior and palatal views, natural 
size. Type specimen, Amer. Mus. No. 7412, Cope Coll., John Day formation 
of Oregon. 
