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nouna small tropical cephalopod of the genus Spirula having prominent eyes and short arms and a many-chambered shell coiled in a flat spiral
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Definition that contains spirula
- spirula peronii a small tropical cephalopod of the genus Spirula having prominent eyes and short arms and a many-chambered shell coiled in a flat spiral
- family spirulidae coextensive with the genus Spirula; included in the order Belemnoidea in some older classifications
- spirulidae coextensive with the genus Spirula; included in the order Belemnoidea in some older classifications
- order belemnoidea order of extinct dibranchiate cephalopods related to the surviving spirulas
- spirula a small tropical cephalopod of the genus Spirula having prominent eyes and short arms and a many-chambered shell coiled in a flat spiral
- belemnoidea order of extinct dibranchiate cephalopods related to the surviving spirulas