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Eumetazoa (metazoans)
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Bilateria (bilaterally symmetrical animals)
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Protostomia (protostomes)
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Annelida (segmented worms)
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Class Polychaeta
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Order Aciculata
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Family Spintheridae
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Genus Spinther
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Species Spinther alaskensis
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Species Spinther arcticus
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Species Spinther citrinus
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Species Spinther japonicus
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Species Spinther miniaceus
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Species Spinther oniscoides
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Species Spinther wireni
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