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PalaeovertebrataVol. 9, Ext:343-353. 1980
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On the genus Dikkomys (Geomyoidea, Mammalia)
Morton Green and Philip R. BjorkKeywords: Dikkomys; Geomyoidae; North America
Cite this article: Green M., Bjork P. R., 1980. On the genus Dikkomys (Geomyoidea, Mammalia). Palaeovertebrata 9 (ext): 343-353.
The geomyoid genus Dikkomys is well represented in a sample from the Black Bear Quarry Il local fauna of Early Hemingfordian age in Bennett County, South Dakota. Isolated unworn P/4's of Dikkomys matthewi WOOD have a prominent median cristid (sagicristid) with a connection to the metaconid and the hypolophid. With wear, P/4 does not become as molariform as P/4 because of this cristid.
Published in Vol. 9, Ext (1980)