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Cryptodontia
Cryptodontia is a group of dicynodont therapsids that includes the families Geikiidae, Oudenodontidae, and Rhachiocephalidae. It was first named in 1860 by English paleontologist Richard Owen. Owen intended Cryptodontia to be a family, and the name was later changed to "Cryptodontidae" to reflect this ranking. The name Cryptodontia was restored in 2009 when it was redefined as a larger clade containing several families of dicynodonts.
==Classification==
Below is a cladogram from Kammerer ''et al.'' (2011) showing the phylogenetic placement of Cryptodontia:
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|label2= Dicynodontoidea
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抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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