Spirula
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A genus of cephalopods having a multilocular, internal,siphunculated shell in the form of a flat spiral, the coils of whichare not in contact.
Spirula meaning & definition 1 of Spirula.
A genus of cephalopods having a multilocular, internal,siphunculated shell in the form of a flat spiral, the coils of whichare not in contact.