After Honey, 1990, McKenna & Bell, 1997, Gunnell & Rose, 2002, and Ni, Meng, Beard, Gebo, Wang & Li, 2009

<==o †Omomyinae Trouessart, 1879
   |?- †Huerfanius rutherfurdi
   |?- †Mytonius hopsoni
   |?- †Palaeacodon vagus
   |-- †Rooneyia viejaensis Wilson, 1966 [Rooneyini]
   `--+--+--o †Steinius Bown & Rose, 1984 ["Steiniini"]
      |  |  |-- †S. vespertinus (Matthew, 1915) [Omomys vespertinus Matthew, 1915]
      |  |  `-- †S. annectens Bown & Rose, 1984
      |  `--+--o †Uintaniini
      |     |  |--†Jemezius szalayi Beard, 1987
      |     |  `--o †Uintanius Matthew, 1915
      |     |     |?- †U. turriculorum
      |     |     |-- †U. ameghini (Wortman, 1904) [Omomys ameghini]
      |     |     `-- †U. rutherfurdi Robinson, 1966
      |     `--+--o †Hemiacodon [“Hemiacodontini” sensu Honey, 1990; [Macrotarsiini sensu Gunnell & Rose, 2002]
      |        |  |?- †H. nanus
      |        |  |?- †H. pucillus
      |        |  |?- †H. pygmaeus
      |        |  |-- †H. gracilis Marsh, 1872
      |        |  `-- †H. casamissus Beard et al., 1992
      |        `--+--o †Omomyini Trouessart, 1879
      |           |  |?- †Chumachius balchi Stock, 1933
      |           |  `--o †Omomys Leidy, 1869
      |           |     |-- †O. carteri Leidy, 1869
      |           |     `-- †O. lloydi Gazin, 1958
      |           `==o Macrotarsiini sensu Gunnell & Rose, 2002
      |              |-- †Yaquius travisi Mason, 1990
      |              `--o †Macrotarsius Clark, 1941
      |                 |?- †M. roederi Kelly, 1990
      |                 |?- †M. macrorhysis  Beard, e tal., 1994
      |                 |-- †M. jepseni Robinson, 1968
      |                 `--+-- †M. seigerti Robinson, 1968
      |                    `--+-- †M. montanus Clark, 1941
      |                       `--o Tarcadectinae Szalay & Lucas, 1996 sensu Ni, Meng, Beard, Gebo, Wang & Li, 2009 [Tarkadectini]
      |                          |-- †Tarkadectes montanensis McKenna, 1990; Eoc. NAm.
      |                          `--+-- †Tarka stylifera McKenna, 1990; Eoc. NAm.
      |                             `-- †Tarkops mckennai Ni, Meng, Beard, Gebo, Wang & Li, 2009; Eoc. CAs.
      `--o †Washakiini Szalay, 1976
         |?- †“Loveina” wapitiensis Gunnell et al., 1992
         |-- †Loveina zephyri Simpson, 1940 [incl. Omomys sheai]
         `--+-- †“Loveina” minuta (Loomis, 1906) [Notharctus minutus Loomis, 1906; incl. Omomys minutus]
            `--+--o †Shoshonius Granger, 1910
               |  |-- †S. bowni Honey, 1990
               |  `-- †S. cooperi Granger, 1910
               `--+--o Washakius Leidy, 1873 sensu lato [paraphyletic genus, if Dyseolemur exclueded]
                  |  |?- †“Washakius” laurae Simpson, 1959
                  |  |-- †“Washakius” izetti Honey, 1990
                  |  `--+-- †Washakius insignis Leidy, 1873 [type of genus Washakius Leidy, 1873]
                  |     `--+-- †“Washakius” woodringi Stock, 1938
                  |        `-- †Dyseolemur pacificus Stock, 1934
                  `--o †Utahiini
                     |--o †Utahiina
                     |  |?- †Asiomomys changbaicus Wang & Li, 1990
                     |  |-- †Utahia kayi Gazin, 1958
                     |  |-- †Stockia powayensis Gazin, 1958
                     |  `-- †Chipataia lamporea Rasmussen, 1996
                     `--o †Mytoniina
                        |--o †Ourayia Gazin, 1958
                        |  |-- †O. uintensis (Osborn, 1895) [Microsyops uintensis Osborn, 1895]
                        |  `-- †O. hopsoni Robinson, 1968
                        `--+-- †Wyomomys bridgeri Gunnell, 1995
                           `-- †Ageitodendron matthewi Gunnell, 1995

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