Taxonomic Hierarchy
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| | Kingdom | Animalia
– Animal, animaux, animals |
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| | Subkingdom | Bilateria
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| | Infrakingdom | Protostomia
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| | Superphylum | Lophozoa
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| | Phylum | Mollusca
– mollusques, molusco, molluscs, mollusks |
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| | Class | Gastropoda Cuvier, 1797
– gastropods, slugs, snails, escargots, gastéropodes, limaces, caracol, caramujo, lesma |
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| | Subclass | Opisthobranchia Milne-Edwards, 1848
– opisthobranchs |
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| | Order | Cephalaspidea P. Fischer, 1883
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| | Family | Retusidae Thiele, 1926
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| | Genus | Volvulella Newton, 1891 |
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Direct Children: |
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| | Species |
Volvulella acuminatus Bruguiere, 1792
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| | Species |
Volvulella californica Dall, 1919
– California spindle-bubble | |
| | Species |
Volvulella catharia Dall, 1919
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| | Species |
Volvulella cylindrica (Carpenter, 1864)
– cylindrical spindle-bubble | |
| | Species |
Volvulella panamica Dall, 1919
– Panamic spindle-bubble | |
| | Species |
Volvulella paupercula (Watson, 1883)
– spineless spindle-bubble | |
| | Species |
Volvulella persimilis (Morch, 1875)
– southern spindle-bubble | |
| | Species |
Volvulella recta (Morch, 1875)
– spined spindle-bubble | |
| | Species |
Volvulella texasiana Harry, 1967
– Texas spindle-bubble | |
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