chiton, coat-of-mail shell, sea cradle, polyplacophore
['acorn', 'orange', 'spaghetti squash', "yellow lady's slipper, yellow lady-slipper, Cypripedium calceolus, Cypripedium parviflorum", 'agaric', 'dugong, Dugong dugon', 'buckeye, horse chestnut, conker']