Class Mammalia Linnaeus, 1758 - mammals
Count: 29o;11f;21g; ‡1f
   Subclass Prototheria Gill, 1872 - monotremes
  Count: [*] 1o;2f;3g;5s;9ss
     Order Monotremata Bonaparte, 1837 - monotremes
    Count: [*] 2f;3g;5s;9ss
       Family Ornithorhynchidae Gray, 1825 - platypuses
      Count: [*] 1g;1s
         Genus Ornithorhynchus Blumenbach, 1800 - duck-billed platypus
        Count: [*] 1s
           1 Ornithorhynchus anatinus (Shaw, 1799) - platypus
          Count: -