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TITANOTHERES OP ANCIENT WYOMING, DAKOTA, AND NEBRASKA 



Fish, reptile, and mammal Jauna contemporary with the titanotheres 



" This is, in fact, an undescribed genus, more primitive than Hyaenodon and Pterodon, allied apparently to Sinopa and Tritemnodon. 



>> If Mr. Lambe's figure is correct this can hardly be Z>. felinus; it agrees much better with D. dodgei Scott. 



' CynodicHs is not applicable to the American OlJgocene species that have been called by that name. Nothocyon is next in priority among available names. The type, 

 however (N. geismarianus) , is a large and rather specialized species from the John Day formation. It maybe necessary to separate the small species from the middle and 

 lower Oligocene under the name Pseudocynodictis (Schlosser). 



