Alike 4.0 truetrue English Four of the five extant monotreme species: platypus (top-left), short-beaked echidna (top-right), western long-beaked echidna
DescriptionMammalia 0.jpg English: Species from class Mammalia. Date 27 November 2023 Source File:Theria.jpg File:PlatypusBrokenRiverQLDAustralia.jpg Author derivative