CAUSES OF THE EVOLUTION AND EXTINCTION OF THE TITANOTHERES 



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'a.(n.nas.plj 



FiGWJBE 743. — Skull of Dolichorhinus hyognathus 

 Am. Mils. 18S1 (type ot " Telmatotherium cormitum"). Top (A), palatal (B), and left side (C) views. 



