Class Mammalia Linnaeus, 1758 - mammals
   "Eupantotheria" Kermack & Mussett, 1958, incertae sedis [paraphyletic]
     Superorder †Dryolestoidea Butler, 1939
       Order †Dryolestida Prothero, 1981
         Family †Mesungulatidae Bonaparte, 1986 [monotypic]
           Genus †Mesungulatum Bonaparte & Soria, 1985 [monotypic]
             1 †Mesungulatum houssayi Bonaparte & Soria, 1985