Mammaliaformes Rowe 1988
Count: [g†g] 1c;24o;125f;1081g; ‡1o;6f;43g; †24o;301f;4057g;1s
   Order †Morganucodonta Kermack, Mussett & Rigney, 1973
  Count: [†g] †1f;6g
     Family †Morganucodontidae Kühne, 1958
    Count: [†g] †6g
       Genus †Helvetiodon Clemens, 1980
      Count: -