Taxonomic Hierarchy
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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 | Gadilida Starobogatov, 1974
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| Suborder | Gadilimorpha Steiner, 1992
incertae sedis |
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| Genus | Compressidens Pilsbry & Sharp, 1897 |
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Direct Children: |
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| Species | Compressidens ophiodon (Dall, 1881)
– flattened toothshell | |
| Species | Compressidens pressus (Pilsbry and Sharp, 1897)
– compressed toothshell | |
| Species | Compressidens stearnsii Pilsbry and Sharp, 1897
– stearns toothshell | |
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