Calliostoma fragum

Calliostoma fragum is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae.^[2]

Calliostoma fragum
Drawing with two views of a shell of Calliostoma fragum
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Vetigastropoda
Order:	Trochida
Superfamily:	Trochoidea
Family:	Calliostomatidae
Genus:	Calliostoma
Species:	C. fragum
Binomial name
Calliostoma fragum (Philippi, 1848) [1]
Synonyms[2]
Trochus fragum Philippi, 1848 Zizyphinus fragum Philippi in Reeve

Description

The height of the shell attains 8 mm. The subperforate shell has a conical shape. It is pale purplish-brown, painted with whitish stripes, with 4 distant series of granules. The eight granulate whorls have their basal margins prominent. The interstices are very delicately obliquely striate. The base is a little convex, sculptured with 8 flat subgranose concentric lirae, each one divided by a furrow into two parts, alternating with narrow elevated lines. The smooth aperture is rhomboidal. The columella is a little oblique, and subtruncate at its base.^[3]

Distribution

This marine species occurs off the Philippines.