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| Kingdom | Animalia
– Animal, animaux, animals |
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| Subkingdom | Bilateria
– triploblasts |
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| Infrakingdom | Deuterostomia
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| Phylum | Hemichordata Bateson, 1885
– hemichordates, hemicordado |
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| Class | Pterobranchia Lankester, 1877
– pterobranchs |
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| Subclass | Cephalodiscida Fowler, 1892
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| Family | Cephalodiscidae Schimkewitsch, 1893
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| Genus | Cephalodiscus M'Intosh, 1882 |
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Direct Children: |
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| Species | Cephalodiscus agglutinans Harmer and Ridewood, 1913
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| Species | Cephalodiscus atlanticus Bayer, 1962
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| Species | Cephalodiscus australiensis Johnston and Muirhead, 1951
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| Species | Cephalodiscus caliciformis Emig, 1977
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| Species | Cephalodiscus densus Andersson, 1907
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| Species | Cephalodiscus dodecalophus M'Intosh, 1882
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| Species | Cephalodiscus evansi Ridewood, 1918
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| Species | Cephalodiscus fumosus John, 1931
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| Species | Cephalodiscus gilchristi Ridewood, 1908
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| Species | Cephalodiscus gracilis Harmer, 1905
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| Species | Cephalodiscus graptolitoides Dilly, 1993
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| Species | Cephalodiscus hodgsoni Ridewood, 1907
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| Species | Cephalodiscus indicus Schepotieff, 1909
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| Species | Cephalodiscus kempi John, 1931
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| Species | Cephalodiscus levinseni Harmer, 1905
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| Species | Cephalodiscus nigrescens Lankester, 1905
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| Species | Cephalodiscus sibogae Harmer, 1905
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| Species | Cephalodiscus solidus Andersson, 1907
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