flatworm, platyhelminth
['platypus, duckbill, duckbilled platypus, duck-billed platypus, Ornithorhynchus anatinus', 'mantis, mantid', 'thunder snake, worm snake, Carphophis amoenus', 'bolete', 'sturgeon', 'lycaenid, lycaenid butterfly', 'grasshopper, hopper']