| Calliostoma ligatum | |
|---|---|
| A living specimen of Calliostoma ligatum crawling on a rocky substrate | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| (unranked): | clade Vetigastropoda |
| Superfamily: | Trochoidea |
| Family: | Calliostomatidae |
| Genus: | Calliostoma |
| Species: | C. ligatum |
| Binomial name | |
| Calliostoma ligatum (Gould, 1849) |
|
Calliostoma ligatum,[1] common name the blue topsnail, is a species of small sea snail with gills and an operculum, a marine gastropod mollusk in the family Calliostomatidae, the Calliostoma top snails.[2]
Contents |
The shell has well rounded globose whorls with 6 to 8 smooth spiral cords per whorl and no umbilicus. The shell is relatively heavy for its size, and its length and width are roughly equal. The base color is chocolate brown to mauve with light tan raised cords, and the aperature is pearly white. Length and width up to 24 mm. [3]
Found from Alaska to San Diego, California. [4]