Margarella antarctica
Species of gastropod From Wikipedia, the free encyclopedia
Margarella antarctica is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae, the top snails.[2]
| Margarella antarctica | |
|---|---|
.jpeg) | |
| 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 (Lamy, 1905) [1] | |
| Synonyms | |
| |
Distribution
This marine species occurs off the South Orkney Islands, the South Shetland Islands, the Antarctic Peninsula, and the Bellingshausen Sea.
Description
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]
Habitat
Minimum recorded depth is 0 m.[4] Maximum recorded depth is 24 m.[4]
References
External links
Wikiwand - on
Seamless Wikipedia browsing. On steroids.