Classification of Rozhdestvensky 1974
G. †Chilantaisaurus Hu 1964
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†Chilantaisaurus maortuensis Hu 1964
†Chilantaisaurus tashuikouensis Hu 1964
G. †Probactrosaurus Rozhdestvensky 1966
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†Probactrosaurus alashanicus Rozhdestvensky 1966
†Probactrosaurus gobiensis Rozhdestvensky 1966
G. †Protoceratops Granger and Gregory 1923
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†Protoceratops andrewsi Granger and Gregory 1923