Class Mammalia Linnaeus, 1758 - mammals
   "Eupantotheria" Kermack & Mussett, 1958, incertae sedis [paraphyletic]
     Superorder †Dryolestoidea Butler, 1939
       Order †Dryolestida Prothero, 1981
         Family †Paurodontidae Marsh, 1887
           Genus †Euthlastus Simpson, 1927 [monotypic]
             1 †Euthlastus cordiformis Simpson, 1927