chiton, coat-of-mail shell, sea cradle, polyplacophore
['artichoke, globe artichoke', 'cabbage butterfly', 'triceratops', 'platypus, duckbill, duckbilled platypus, duck-billed platypus, Ornithorhynchus anatinus', 'walking stick, walkingstick, stick insect', 'seashore, coast, seacoast, sea-coast', 'leafhopper']