monotrème

Definitions of monotrème
  1. noun
    the most primitive mammals comprising the only extant members of the subclass Prototheria
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    types:
    ornithorynque
    small densely furred aquatic monotreme of Australia and Tasmania having a broad bill and tail and webbed feet; only species in the family Ornithorhynchidae
    type of:
    protothériens
    primitive oviparous mammals found only in Australia and Tasmania and New Guinea
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