| Margarella antarctica | |
|---|---|
 | |
| shell of Margarella antarctica (syntype at MNHN, Paris) | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Vetigastropoda |
| Order: | Trochida |
| Superfamily: | Trochoidea |
| Family: | Calliostomatidae |
| Genus: | Margarella |
| Species: | M. antarctica |
| Binomial name | |
| Margarella antarctica | |
| Synonyms | |
| |
Margarella antarctica is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae, the top snails. [2]
This marine species occurs off the South Orkney Islands, the South Shetland Islands, the Antarctic Peninsula, and the Bellingshausen Sea.
It is orange-yellow, with two pairs of cephalic tentacles with large black eyes. [3] The shell is small, and wider than it is high. [3] The orbicular, deeply umbilicated shell has an obtuse-conical shape. It contains four convex whorls, the last of which is adorned only by growth lines. The oblique aperture is sub-circular and pearly inside. In, adults its edges are joined by a callus . The operculum is polygyrous spiral. The color of the shell is bluish gray or greenish. [1] The maximum recorded shell length is 12.5 mm. [4]
Minimum recorded depth is 0 m. [4] Maximum recorded depth is 24 m. [4]
