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| Kingdom | Animalia
– Animal, animaux, animals |
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| Subkingdom | Bilateria
– triploblasts |
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| Infrakingdom | Protostomia
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| Superphylum | Spiralia
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| Phylum | Nemertea
– proboscis worms, ribbon worms, némertes, némertiens, nemertea, nemertíneo, rhynchoela |
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| Class | Neonemertea
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| Subclass | Hoplonemertea
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| Order | Monostilifera
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| Family | Tetrastemmatidae
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| Genus | Tetrastemma |
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Direct Children: |
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| Species | Tetrastemma aberrans
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| Species | Tetrastemma albida
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| Species | Tetrastemma ambiguum Riches, 1893
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| Species | Tetrastemma beaumonti (Southern, 1913)
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| Species | Tetrastemma bicolor
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| Species | Tetrastemma bilineatum
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| Species | Tetrastemma candidum
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| Species | Tetrastemma cephalophorum Burger, 1895
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| Species | Tetrastemma coronatum (Quatrefages, 1846)
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| Species | Tetrastemma elegans
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| Species | Tetrastemma flavidum Ehrenberg, 1831
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| Species | Tetrastemma fozensis Gibson and Junoy, 1991
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| Species | Tetrastemma helvolum Burger, 1895
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| Species | Tetrastemma herouardi (Oxner, 1908)
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| Species | Tetrastemma jeani
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| Species | Tetrastemma longissimum Burger, 1895
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| Species | Tetrastemma melanocephalum
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| Species | Tetrastemma nigrifrons
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| Species | Tetrastemma peltatum Burger, 1895
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| Species | Tetrastemma quadrilineatum
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| Species | Tetrastemma quatrefagesi Burger, 1904
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| Species | Tetrastemma reticulatum
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| Species | Tetrastemma robertianae Mcintosh, 1873
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| Species | Tetrastemma sexlineatum
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| Species | Tetrastemma signifer
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| Species | Tetrastemma vermiculus
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| Species | Tetrastemma verrilli
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| Species | Tetrastemma vittatum
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| Species | Tetrastemma wilsoni
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| Species | Tetrastemma worki Correa, 1961
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