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platypus, duckbill, duckbilled platypus, duck-billed platypus, Ornithorhynchus anatinus | small densely furred aquatic monotreme of Australia and Tasmania having a broad bill and tail and webbed feet; small densely furred aquatic monotreme of Australia and Tasmania having a broad bill and tail and webbed feet; only species in the family Ornithorhynchidae ❲Ornithorhynchus anatinus❳ |