- Ornithorhynchus, genus Ornithorhynchus - type genus of the family Ornithorhynchidae
--1 is a kind of mammal genus
--1 is a member of Ornithorhynchidae, family Ornithorhynchidae
--1 has members:platypus, duckbill, duckbilled platypus, duck-billed platypus, Ornithorhynchus anatinus