| Busycon perversum (Linnaeus, 1758) Double Spines | |
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| On mud in shallow water, Marco Island, Collier County, Florida (204 mm.) | |
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| Busycon perversum (Linnaeus, 1758) Double Spines | |
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|
| On mud in shallow water, Marco Island, Collier County, Florida (204 mm.) | |
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|