Kingdom Animalia Linnaeus, 1758 - animals
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   Phylum Echinodermata Bruguière, 1789 - echinoderms
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     Subphylum Eleutherozoa Bell, 1891
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       Class Asteroidea Blainville, 1830 - sea stars
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         Order Platyasterida Spencer, 1951
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           Genus Luidia Forbes, 1839
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           Genus Platyasterias Agassiz, 1846, nom. nud.
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