Class Mammalia Linnaeus, 1758 - mammals
   "Eupantotheria" Kermack & Mussett, 1958, incertae sedis [paraphyletic]
     Superorder Zatheria McKenna, 1975 see Clade Zatheria McKenna 1975
       †"Peramurans" McKenna, 1975 [paraphyletic]
         Genus †Palaeoxonodon Freeman, 1976, incertae sedis [monotypic]
           1 †Palaeoxonodon ooliticus Freeman, 1979