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1a) Large aperture (opening) compared to shell |
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2a) Has a pointed shell 2b) Does not have a pointed shell |
Go to 4 Go to 5 |
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3a) Has a pointed shell 3b) Does not have a pointed shell |
Go to 6 Atlantic Deer Cowrie |
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4a) Opens on left (hold with aperture facing you and the spire pointed up) 4b) Opens on right (hold with aperture facing you and the spire pointed up) |
Lightning
Whelk Go to 7 |
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5a) Has a shelf inside 5b) Does not have a shelf inside |
Slippersnail Go to 19 |
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6a) Pure white 6b) Colors exist on shell |
Angulate Wentletrap Go to 10 |
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7a) Knobs 7b) No knobs |
Go to 8 Go to 9 |
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8a) Knobs on each whorl and along back, running from top of spire to lower siphon canal 8b) Knobs only on each whorl |
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| 9a) Visible bands (not
rough); bands circle shell 9b) Rough grooves circle shell 9c) No visible bands or rough grooves |
Go to 12 Go to 13 Go to 14 |
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10a) Top-shaped 10b) Longer shell than wide |
Go to 11 Go to 20 |
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11a) Outer lip thin and smooth 11b) Outer lip thick and smooth |
Eastern Mudsnail Marsh Periwinkle |
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| 12a) Thin, dark brown
lines spiraling around shell do not run into aperture 12b) Brown, spiral bands and many broken spirals running into aperture |
Banded Tulip True Tulip |
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13a) Rounded body; short spire; large as fist 13b) Has extended spire; small in size |
Go to 17 Go to 18 |
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14a) Flat, channeled whorls 14b) Large, pointed spire |
Channeled Whelk Horse Conch |
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15a) Large, pointed spines 15b) Short, rough spines |
Giant Eastern Murex Apple Murex |
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16a) Knobs pointed straight 16b) Knobs curved; swelling near lower part of body whorl |
Knobbed Whelk Kiener Whelk |
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17a) Thick, toothed outer lip 17b) Thin, slightly flared outer lip |
Scotch Bonnet Giant Tun |
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18a) Outer lip thick and toothed 18b) Outer lip thin and not toothed |
Thick-lipped Oyster Drill Atlantic Oyster Drill |
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| 19a) More flat than tall
19b) Not flat; very round 19c) Has a keyhole in the top |
White
Baby's Ear Moon Snail (Shark-eye) Cayenne Keyhole Limpet |
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| 20a) Zigzag markings 20b) Round aperture (opening) 20c) Canal at bottom of aperture |
Lettered
Olive Brown-striped Wentletrap Eastern Auger |