After McKenna & Bell, 1997

<==o †Chapattimyinae Hussain, de Bruijn & Leinders, 1978 [taxonomic history]
   |-- †Geitonomys Shevyreva, 1984; L.Eoc. As.
   |-- †Bolosomys Shevyreva, 1984; L.Eoc. As.
   |-- †Chkhikvadzomys Shevyreva, 1984; L.Eoc. As.
   |-- †Gumbatomys asifi Hartenberger, 1982; L.Eoc. As.
   |--o †Birbalomys Hussain, de Bruijn & Leinders, 1978 [†Metkamys Sahni & Srivastava, 1976] [incl. †Basalomys Hartenberger, 1982] L.-M.Eoc. SAs.
   |  |-- †B. lavocati
   |  |-- †B. vandermeuleni
   |  |-- †B. woodi
   |  |-- †B. sondaari Hussain, de Bruijn & Leinders, 1978
   |  `-- †B. ijlsti Hussain, de Bruijn & Leinders, 1978
   |--o †Chapattimys Hussain, de Bruijn & Leinders, 1978; L.-M.Eoc. SAs.
   |  |-- †C. debruijni Hartenberger, 1982
   |  |-- †C. ibrahimshahi
   |  |-- †C. asifi
   |  `-- †C. wilsoni Hussain, de Bruijn & Leinders, 1978
   |?- cf. †Saykanomys chalchae Shevyreva, 1972
   `?-o †Saykanomys Shevyreva, 1972
      |-- †S. bohlini (Dawson, 1964)
      `-- †S. chalchae Shevyreva, 1972

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