protothériens

Definitions of protothériens
  1. noun
    primitive oviparous mammals found only in Australia and Tasmania and New Guinea
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    types:
    monotrème
    the most primitive mammals comprising the only extant members of the subclass Prototheria
    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:
    mammifère
    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
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