After McKenna & Bell, 1997, Cifelli, Wible & Jenkins jr., 1998, and Li & Luo, 2006

<==o †Spalacotheroidea Prothero, 1981 [Spalacotheriida Prothero, 1981, incl. Quirogatheria Bonaparte, 1992]
   |?- †Infernolestes rougieri Cifelli, Davis & Sames, 2014; E.Cret. WNAm.
   |-- †Gobiotheriodon infinitus (Trofimov, 1980) Trofimov, 1997 [Gobiodon Trofimov, 1980] sensu Averianov, 2002
   `--+--o †Maotherium Rougier, Ji & Novacek, 2003
      |  |-- †M. sinensis Rougier, Ji & Novacek, 2003
      |  `-- †M. asiaticus Ji, Luo, Zhang, Yuan & Xu, 2009
      `--+-- †Zhangheotherium quinquecuspidens Hu, Wang, Luo & Li, 1997
         `--+?-o †Tinodontidae Fox, 1985
            |  |-- †Bondesius ferox Bonaparte, 1990 [also claimed to be a archaeonycterid microbat and lately as a dryolestid milk teeth (Averianov, 2002)]
            |  |-- †Mictodon simpsoni Fox, 1984
            |  `--o †Tinodon Marsh, 1879 [Menacodon Marsh, 1887]
            |     |-- †T. bellus Marsh, 1879
            |     |-- †T. lepidus Marsh, 1879
            |     `-- †T. micron Ensom & Sigogneau-Russell, 2000
            `--+?-o †Barbereniidae Bonaparte, 1990
               |  |-- †Guirogatherium freyi Bonaparte, 1990 [Guimarota freyi?] [lately identified as a dryolestid milk teeth (Averianov, 2002)]
               |  `-- †Barberenia allenensis Bonaparte, 1990 [lately identified as a dryolestid milk teeth (Averianov, 2002)]
               `--o †Spalacotheriidae Marsh, 1887
                  |?- †Microderson laaroussii Sigogneau-Russell, 1991 [lately identified as a stem-group zatherian (Averianov, 2002)]
                  |?- †Shalbaatar bakht Nessov, 1997
                  |--o †Spalacotherium Owen, 1854 [Spalacotheriinae Marsh, 1887]
                  |  |-- †S. tricuspidens Simpson, 1928
                  |  |-- †S. taylori Clemens & Lees, 1971
                  |  |-- †S. longirostris [Peralestes longirostris]
                  |  |-- †S. evansae Ensom & Sigogneau-Russell, 2000
                  |  `-- †S. hookeri Gill, 2004
                  `--o †Spalacolestinae Cifelli & Madsen, 1999
                     |?-o †Aliaga Cuenca-Bescós, Canudo, Gasca, Moreno-Azanza & Cifelli, 2014
                     |  |-- †A. molinensis Cuenca-Bescós, Canudo, Gasca, Moreno-Azanza & Cifelli, 2014
                     |  |?- †A. henkeli (Krebs, 1985) [Spalacotherium henkeli Krebs, 1985]
                     |  `?- cf. †A. henkeli (Krebs, 1985) [Cuenca-Bescós et al., 2014]
                     |-- †Symmetrolestes parvus Tsubamoto & Rourier, in Tsubamoto, Rougier, Isaji, Manabe & Forasiapi, 2004; E.Cret. EAs.
                     `--+-- †Akidolestes cifellii Li & Luo, 2006
                        `--+-- †Heishanlestes changi Hu, Fox, Wang & Li, 2005
                           `--+-- †Spalacotheroides bridwelli Patterson, 1955
                              `--+--o †Spalacotheridium Cifelli, 1990c
                                 |  |?- †S. noblei Cifelli & Madsen, 1999?
                                 |  `-- †S. mckennai Cifelli, 1990c
                                 `--+--o †Spalacolestes Cifelli, 1999
                                    |  |-- †S. cretulablatta Cifelli, 1999
                                    |  `-- †S. inconcinnus Cifelli & Madsen, 1999
                                    `--o †Symmetrodontoides Fox, 1979 [Bonaparte (1999) thinks that these animals are Dryolestidans]
                                       |-- †S. foxi Cifelli & Madsen, 1986
                                       |-- †S. canadensis Fox, 1979
                                       `-- †S. oligodentos Cifelli, 1990c

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