flatworm, platyhelminth
['platypus, duckbill, duckbilled platypus, duck-billed platypus, Ornithorhynchus anatinus', 'dung beetle', 'American lobster, Northern lobster, Maine lobster, Homarus americanus', 'sturgeon', "loupe, jeweler's loupe", 'ear, spike, capitulum', 'sandal']