Egg-laying Mammal — synonyms, definition
1. egg-laying mammal (Noun)
1 synonym
monotreme
1 definition
egg-laying mammal (Noun) — The most primitive mammals comprising the only extant members of the subclass Prototheria.
1 type of
prototherian
8 types
Ornithorhynchus anatinus anteater duck-billed platypus duckbill duckbilled platypus echidna platypus spiny anteater