| 1. | There is one subspecies : " Neptunea polycostata aino"
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| 2. | The species was formerly known as " Neptunea contraria ".
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| 3. | The New England Neptune ( " Neptunea lyrata decemcostata " ) was declared the state seashell of Massachusetts in 1987.
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| 4. | Arthur collected ethnographic objects, mammal skeletons and molluscs ( including a mollusk later named " Neptunea sachsenheimi " ).
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| 5. | ""'Neptunea intersculpta " "'is a species of sea snail, a marine gastropod mollusk in the family Buccinidae, the true whelks.
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| 6. | ""'Neptunea alabaster " "'is a species of sea snail, a marine gastropod mollusk in the family Buccinidae, the true whelks.
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| 7. | ""'Neptunea alexeyevi " "'is a species of sea snail, a marine gastropod mollusk in the family Buccinidae, the true whelks.
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| 8. | ""'Neptunea aurigena " "'is a species of sea snail, a marine gastropod mollusk in the family Buccinidae, the true whelks.
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| 9. | ""'Neptunea borealis " "'is a species of sea snail, a marine gastropod mollusk in the family Buccinidae, the true whelks.
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| 10. | ""'Neptunea communis " "'is a species of sea snail, a marine gastropod mollusk in the family Buccinidae, the true whelks.
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