#prototherian  primitive oviparous mammals found only in Australia Tasmania and New Guinea
  supertype:  mammal  any warm-blooded vertebrate having the skin more or less covered with hair; young are born alive except for the small subclass of monotremes and nourished with milk
  subtype:  monotreme__egglayingmammal  the most primitive mammals comprising the only extant members of the subclass Prototheria
     subtype:  echidna__spiny_anteater__spinyanteater__anteater  burrowing spine-covered monotreme of Australia having a long snout and claws for hunting ants and termites
     subtype:  spiny_anteater__spinyanteater__echidna__anteater  New Guinea echidnas
     subtype:  duck-billed_platypus__platypus__duckbill__duckbilled_platypus__Ornithorhynchus_anatinus  small densely furred aquatic monotreme of Australia and Tasmania having a broad bill and tail and webbed feet; only species in the family Ornithorhynchidae

No statement uses or specializes prototherian; click here to add one.