trilobite
['bottlecap', 'gyromitra', 'horned viper, cerastes, sand viper, horned asp, Cerastes cornutus', 'American lobster, Northern lobster, Maine lobster, Homarus americanus', 'sulphur butterfly, sulfur butterfly', 'sidewinder, horned rattlesnake, Crotalus cerastes', "loupe, jeweler's loupe"]