egg-laying mammal

Thesaurus

Noun

1.

egg-laying mammal - the most primitive mammals comprising the only extant members of the subclass Prototheria monotreme prototherian - primitive oviparous mammals found only in Australia and Tasmania and New Guinea echidna, spiny anteater, anteater - a burrowing monotreme mammal covered with spines and having a long snout and claws for hunting ants and termites; native to Australia echidna, spiny anteater, 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, duckbilled platypus, Ornithorhynchus anatinus, platypus, duckbill - small densely furred aquatic monotreme of Australia and Tasmania having a broad bill and tail and webbed feet; only species in the family Ornithorhynchidae