family Spirulidae


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Noun1.family Spirulidae - coextensive with the genus Spirula; included in the order Belemnoidea in some older classifications
mollusk family - a family of mollusks
Decapoda, order Decapoda - squids and cuttlefishes
genus Spirula - genus of small cephalopods with many-chambered spiral shells resembling those of the extinct belemnites