egg-laying mammal

1. The most primitive mammals comprising the only extant members of the subclass Prototheria (synset 101874516)
   is a type of: prototherian - primitive oviparous mammals found only in Australia and Tasmania and New Guinea
   subtypes:

   • anteater, echidna, spiny anteater - a burrowing monotreme mammal covered with spines and having a long snout and claws for hunting ants and termites; native to Australia
   • anteater, echidna, spiny anteater - a burrowing monotreme mammal covered with spines and having a long snout and claws for hunting ants and termites; native to New Guinea
   • duck-billed platypus, duckbill, duckbilled platypus, ornithorhynchus anatinus, platypus - small densely furred aquatic monotreme of Australia and Tasmania having a broad bill and tail and webbed feet; only species in the family Ornithorhynchidae
   same as: monotreme

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