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Order Monotremata

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Order Monotremata (4 families, 8 genera, 11 species)

• Family Kollikodontidae (1 genus, 1 species)*
  • Genus Kollikodon*
    • Kollikodon ritchiei*
• Family Ornithorhynchidae (3 genera, 4 species)
  • Genus Monotrematum* (1 species)
    • Monotrematum sudamericanum*
  • Genus Obdurodon (2 species)*
    • Obdurodon dicksoni*
    • Obdurodon insignis*
  • Genus Ornithorynchus (1 species)
    • Ornithorynchus anatimus
      Duckbilled Platypus
• Family Tachyglossidae (3 genera, 5 species)
  Spiny Anteater or Echidna
  • Genus Megalibgwilia (2 species)*
    • Megalibgwilia ramsayi*
    • Megalibgwilia robusta*
  • Genus Tachyglossus (1 species)
    • Tachyglossus aculeata
      Short-Nosed Echidna
  • Genus Zaglossus (2 species)
    • Zaglossus bruijnii
      Long-Nosed Echidna
    • Zaglossus hacketti*

*extinct

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