| Calliostoma supragranosum | |
|---|---|
| An unusual color pattern shell of Calliostoma supragranosum Carpenter, 1864 from Laguna Beach, California | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| (unranked): | clade Vetigastropoda |
| Superfamily: | Trochoidea |
| Family: | Calliostomatidae |
| Subfamily: | Calliostomatinae |
| Tribe: | Calliostomatini |
| Genus: | Calliostoma Swainson, 1840[1] |
| Species: | C. supragranosum |
| Binomial name | |
| Calliostoma supragranosum Carpenter, 1864 |
|
Calliostoma supragranosum Carpenter, 1864[2] is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae, which was formerly placed within the Trochidae or top snails. Its common name is the granulated top snail.
This is a small species. The sculpture of the shell is characterized by numerous fine spiral cords that are strongly beaded in the early whorls, and may become weakly beaded on later whorls. The shell color is typically a light yellowish-brown with irregular lighter maculations, very occasionally with pink or purple beads or rarely a stripe. Interior brightly nacreous. Height 8 to 13 mm.[3] [4]
This species occurs from Monterey Bay, California to Asuncion Island southern Baja California, Mexico.[5]