Spirostylidae | |
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Scientific classification | |
Kingdom: | |
Phylum: | |
Class: | |
(unranked): | clade Caenogastropoda
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Family: | Spirostylidae Cossmann, 1909
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Spirostylidae is an extinct family of fossil sea snails, marine gastropod molluscs in the clade Caenogastropoda.[1]