primitive fish of the Mississippi valley having a long paddle-shaped snout

[ Syn: paddlefish , polyodon spathula ]

small densely furred aquatic monotreme of Australia and Tasmania having a broad bill and tail and webbed feet; only species in the family Ornithorhynchidae

[ Syn: platypus , duckbilled platypus , duck-billed platypus , ornithorhynchus anatinus ]

having a beak resembling that of a duck; a duck-billed dinosaur

[ Syn: duck-billed ]