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Eumetazoa (metazoans)
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Bilateria (bilaterally symmetrical animals)
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Protostomia (protostomes)
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Nemertea (ribbon worms)
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Class Enopla
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Order Hoplonemertea
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Family Amphiporidae
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Family Carcinonemertidae
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Family Cratenemertidae
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Family Drepanophoridae
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Family Emplectonematidae
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Family Monostilifera
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Family Nectonemertidae
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Family Not assigned
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Family Ototyphlonemertidae
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Family Paradrepanophoridae
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Family Planktonemertidae
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Family Plectonemertidae
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Family Prosorhochmidae
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Family Tetrastemmatidae
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