chambered nautilus, pearly nautilus, nautilus
['sunscreen, sunblock, sun blocker', 'buckeye, horse chestnut, conker', 'echidna, spiny anteater, anteater', 'common newt, Triturus vulgaris', 'vault', 'pencil box, pencil case', 'sidewinder, horned rattlesnake, Crotalus cerastes']