PLATE. XIX 
PERMIAN VERTEBRATES. SKULL OF DIADECTES 
Nomenclature & 
Cope 1880-3 Revised 1915 
Empedocles molaris Diadectes molaris 
Frias. 1-4. Diadectes molaris Cope, 1878. Skull, natural size, Amer. Mus. No. 4350, Cope Coll. 
Lower Permian, Little Wichita R., Texas. Fig. 1, palatal view restored; fig. 2, 
side view, missing parts in outline; fig. 3, occipital view, missing parts in outline; 
fig. 4, premaxille, anterior view; fig. 5, crown view of upper teeth. 
Fias. 5-6. Diadectes ? fissus (Cope, 1883). Upper and part of lower jaw, natural size, ? No. 
4348, Cope Coll., Lower Permian, Wichita Basin, Texas. 

