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Eumetazoa (metazoans)
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Bilateria (bilaterally symmetrical animals)
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Protostomia (protostomes)
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Tardigrada (water bears)
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Class Heterotardigrada
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Order Arthrotardigrada
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Family Halechiniscidae
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Genus Actinarctus
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Genus Angursa
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Genus Archechiniscus
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Genus Bathyechiniscus
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Genus Chrysoarctus
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Genus Clavarctus
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Genus Dipodarctus
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Genus Euclavarctus
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Genus Exoclavarctus
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Genus Florarctus
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Genus Halechiniscus
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Genus Lepoarctus
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Genus Ligiarctus
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Genus Moebjergarctus
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Genus Opydorscus
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Genus Orzeliscus
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Genus Paradoxipus
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Genus Paratanarctus
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Genus Parmursa
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Genus Pleocola
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Genus Proclavarctus
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Genus Raiarctus
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Genus Rhomboarctus
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Genus Styraconyx
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Genus Tanarctus
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Genus Tetrakentron
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Genus Tholoarctus
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Genus Wingstrandarctus
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Genus Zioella
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