PETERSON: A REVISION OF THE ENTELODONTIDAG 63 
Genus DAKODON Cope. 
A description of this genus was given. by Professor Cope in a paper (9, p. 15) read 
before the American Philosophical Society, November 15, 1878, and published on 
December 3, of the same year. Owing to the very poor condition of the type, Cope 
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Fia. 18. Type of Dxodon shoshonensis Cope. About } nat, size. Cope Collection, No. 7387. Oblique View to show 
symphysis. 
was unable to give any characters, except the absence of the osseous tuberosities on 
the anterior under borders of the lower jaws, which differ from those of the Ameri- 
can Hntelodonts generally. Cope placed Dwxodon in the suborder Perissodactyla 
and associated it with Titanotheriwm and Chalicotheriwm. The genus has hitherto 
been regarded as belonging to the Perissodactyla and Zittel (99, p. 304) referred to 
it with a misprint under the name Daledon in connection with the synonymy of 
Titanotheriwm. 
The fortunate discovery of additional material, which undoubtedly belongs to 
this genus, by the California University and published by Dr. W. J. Sinclair (89, 
pp. 132-134), furnishes much welcome light on the subject, and it now appears that 
Dxodon may confidently be removed from the Perissodactyla and placed in the 
family Mntelodontide. 
Principal Generic Characters of Deodon: Chin without knob-like processes on 
the under border; posterior mandibular protuberance small and hollow; a grad- 
ual backward slope of the dependent angle of the lower jaw; jugal process with a 
moderate downward extension ; fibula not codssified with the tibia. 
5 Ina letter from Dr. E. L. Furlong, of the California University, Berkeley, California, he assures me that ‘‘ there 
is no fusion of the shaft of the fibula with the tibia.” 
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