Class Mammalia Linnaeus, 1758 - mammals
Count: [*†*] 5o; †16o;76f;282g;438s
   Subclass †Allotheria Marsh, 1880
  Count: [†*] †2o;23f;81g;133s [16 Mar 2022]
     Order †Multituberculata Cope, 1884
    Count: [†*] †19f;76g;125s [14 Mar 2022]
       Suborder †"Plagiaulacida" Ameghino, 1889 [paraphyletic]
      Count: [†*] †8f;36g;56s [13 Mar 2022]
         †Paulchoffatiid line
        Count: [†*] †3f;22g;31s [13 Mar 2022]
           Family †Paulchoffatiidae Hahn, 1969
          Count: [†*] †14g;22s [13 Mar 2022]
             Subfamily †Paulchoffatiinaeᵀ Hahn, 1969
            Count: [†*] †11g;13s [13 Mar 2022]
               †Taxa based on lower dentition
              Count: [†*] †5g;7s
                 Genus †Plesiochoffatia Hahn & Hahn, 1999
                Count: [†*] †3s [13 Mar 2022]
                   †Plesiochoffatia thoas (Hahn & Hahn, 1998)
                  Count: -