| Gibbula magus | |
|---|---|
 | |
| Gibbula magus | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Vetigastropoda |
| Order: | Trochida |
| Superfamily: | Trochoidea |
| Family: | Trochidae |
| Genus: | Gibbula |
| Species: | G. magus |
| Binomial name | |
| Gibbula magus (Linnaeus, 1758) | |
| Synonyms | |
| |
Gibbula magus, common name the great top shell, is a species of small sea snail, a marine gastropod mollusc in the family Trochidae, the top snails. [1]
The size of the shell varies between 17 mm and 35 mm. This is an abundant species. The solid, widely, deeply umbilicate shell has a low-conical shape. There is great variation in color. It is whitish or yellowish, painted with zigzag radiating stripes, maculations or lines of pink or rich brown, sometimes so broken into minute flecks as to appear minutely mottled all over, or sometimes lacking markings. The base of the shell is radiately zigzag-striped. The apex is acute. The conical spire contains 7 to 8 whorl. These are swollen, gibbous and radiately plicate beneath the sutures, and with a rim or flange at the periphery. The entire surface is spirally finely striate. The base is convex. The aperture is very oblique, rounded-rhomboid, and smooth within. The columella oblique, its edge straight or slightly convex in the middle, at its insertion reflexed slightly over the umbilicus. The umbilicus is bounded by a strong spiral rib. [2]
This species occurs in the North Sea, the North Atlantic Ocean (Azores, Morocco) and in the Mediterranean Sea.
Steromphala divaricata, common name the divaricate gibbula, is a species of small sea snail, known as top snails or top shells, marine gastropod molluscs in the family Trochidae, the top snails.
Steromphala cineraria is a species of small sea snail, a marine gastropod mollusc in the family Trochidae, the top snails.
Gibbula albida, common name the whitish gibbula, is a species of small sea snail, a marine gastropod mollusc in the family Trochidae, the top snails.
Steromphala pennanti is a species of small sea snail, a marine gastropod mollusc in the family Trochidae, the top snails.
Colus gracilis is a species of sea snail, a marine gastropod mollusk in the family Buccinidae, the true whelks and the like.
Clanculus corallinus is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.
Steromphala adansonii is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.
Gibbula fanulum is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.
Gibbula leucophaea is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.
Gibbula philberti is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.
Steromphala umbilicalis, common name the flat top shell, is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.
Steromphala umbilicaris is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.
Steromphala varia is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.
Jujubinus striatus, common name the grooved top shell, is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.
Hinea lineata, common name the dwarf Atlantic planaxis, is a species of sea snail, a marine gastropod mollusk in the family Planaxidae.
Pseudosimnia carnea, common name the dwarf red egg shell, is a species of sea snail, a marine gastropod mollusk in the family Ovulidae, the ovulids, cowry allies or false cowries.
Lacuna parva, common name the tiny lacuna, is a species of sea snail, a marine gastropod mollusk in the family Littorinidae, the winkles or periwinkles.
Alvania cancellata is a species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Rissoidae.
Alvania carinata is a species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Rissoidae.
Eurytrochus strangei is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.
