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Eumetazoa (metazoans)
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Bilateria (bilaterally symmetrical animals)
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Protostomia (protostomes)
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Chaetognatha (arrow worms)
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Class Not assigned
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Order Not assigned
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Family Eukrohniidae
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Genus Caecosagitta
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Genus Eukrohnia
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Genus Heterokrohnia
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Genus Paraeukrohnia
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Genus Praeukrohnia
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Genus Protoeukrohnia
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Genus Pseudeukrohnia
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