| Calliostoma unicum | |
|---|---|
| Shell and operculum of Calliostoma unicum (Dunker, 1860), 23.0 mm height by 22.5 mm diameter, collected at low tide on algae at Wagu, Japan | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| (unranked): | clade Vetigastropoda |
| Superfamily: | Trochoidea |
| Family: | Calliostomatidae |
| Subfamily: | Calliostomatinae |
| Genus: | Calliostoma |
| Species: | C. unicum |
| Binomial name | |
| Calliostoma unicum (Dunker, 1860) |
|
| Synonyms[1] | |
|
Calliostoma affinis Dall, 1872 |
|
Calliostoma unicum is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae.[1]
Contents |
The shell has inflated globose whorls with a rounded periphery and a closed umbilicus. The surface texture consists of spiral striations which are beaded on the early whorls. The aperature is white and nacreous. The base color is a light reddish brown with irregular maculations of darker brown and a row of small alternating white and dark brown spots encircling the whorls. [2]
Found from Central Honshu, Japan southwards at 10 to 20 m depth. [3]