Classification of Bai et al. 2018
Fm. †Hyracodontidae Cope 1879
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G. †Ardynia Matthew and Granger 1923
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†Ardynia kazachstanensis Beliajeva 1952
†Ardynia ordosensis Bai et al. 2018
†Ardynia praecox Matthew and Granger 1923
Invalid names: Ardynia plicidentata Gabunia 1964 [nomen dubium]