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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 | Mollusca
– mollusques, molusco, molluscs, mollusks |
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| Class | Scaphopoda Bronn, 1862
– tusk shells, scaphopodes, dentálio, scafópode |
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| Order | Dentaliida da Costa, 1776
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| Superfamily | Dentalioidea
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| Family | Dentaliidae Children, 1834
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| Genus | Graptacme Pilsbry & Sharp, 1897 |
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Direct Children: |
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| Species | Graptacme calamus (Dall, 1889)
– reed tuskshell | |
| Species | Graptacme eborea (Conrad, 1846)
– ivory tuskshell | |
| Species | Graptacme inversa (Deshayes, 1826)
– turned tuskshell | |
| Species | Graptacme perlonga (Dall, 1881)
– slender tuskshell | |
| Species | Graptacme semipolita (Broderip and G. B. Sowerby I, 1829)
– half-smooth tuskshell | |
| Species | Graptacme semistriolata (Guilding, 1834)
– scratched tuskshell | |
| Species | Graptacme semistriolatum (Guilding, 1834)
– scratched tuskshell | |
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