364 



THE AGE OF MAMMALS 



Mustelidse outlyers of the 'Ogallala Formation,' we find the 



Canimartes first proofs of the existence in America of siiort- 



Canidae jawed or brevirostral Proboscidea. These masto- 



Canis dons as a rule have lower incisor teeth, and were 



Amphicyonids hence termed Dibelodon by Cope; they possess 



many-crested molar teeth, in some respects resem- 

 bling those of the Stegodon type. 



Among the camels occur pliauchenias of very large size. The peccaries 

 or dicotylids now pass from the Miocene Prosthennops stage into .the Upper 



Fig. 169. — Middle Pliocene mammals of Texas (X 3V). Outline restorations by Charles R. 

 Kiiight. A. The glyptodon Glyptotherium texanum. B. The giraffe-camel Alticamelus. 



Pliocene and Lower Pleistocene Platygomis stage. This animal is a large, 

 fleet-footed, or cursorial peccary, including two species,^ the more primitive 



1 Gidley, J. W., On Two Species of Platygonus from the Pliocene of Texas. Bull. Amer. 

 Mus. Nat. Hist., Vol. XIX, July 24, 1903, pp. 477-481. 



