Classification of the genus Periphragnis
G. †Periphragnis Roth 1899
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†Periphragnis circunflexus Ameghino 1901
†Periphragnis exauctus Ameghino 1902
†Periphragnis harmeri Roth 1899
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Invalid names: Asmodeus armatus Ameghino 1901 [synonym], Calodontotherium varietatum Roth 1904 [synonym], Eurystephanodon cattanii Roth 1904 [synonym], Lemudeus angustidens Roth 1904 [synonym], Tehuelia regia Roth 1902 [synonym], Thomashuxleya rankei Roth 1902 [synonym]
†Periphragnis vicentei Bradham et al. 2015
Invalid names: Coelodontotherium Roth 1903 [synonym], Lemudeus Roth 1903 [synonym], Proasmodeus Ameghino 1902 [synonym], Tehuelia Roth 1902 [synonym]