prototherian

Definitions of prototherian

1. noun

   primitive oviparous mammals found only in Australia and Tasmania and New Guinea
   types:

   egg-laying mammal, monotreme

   the most primitive mammals comprising the only extant members of the subclass Prototheria

   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

   Ornithorhynchus anatinus, duck-billed platypus, duckbill, duckbilled platypus, 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

   type of:

   mammal, mammalian

   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