Calliostoma annulatum

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Calliostoma annulatum
Scientific classification
Kingdom: Animalia Phylum: Mollusca Class: Gastropoda Order: Archaeogastropoda Family: Calliostomatidae Genus: Calliostoma Species: C. annulatum
Binomial name
Calliostoma annulatum (Lightfoot, 1786)

Calliostoma annulatum, commonly known as the purple-ring topsnail, blue-ring topsnail, jewelled topsnail or similar names, is a medium-sized sea snail, a sublittoral marine gastropod mollusk of the Pacific coast of North America.

Contents 1 Range of distribution 2 Shell description 3 Life habits 4 References

[edit] Range of distribution

This top shell can be found from Isla San Geronimo, Baja California, north to Forrester Island, Alaska.

[edit] Shell description

This species is distinguished by its brilliantly colored shell, which is lustrous with a gold field and a purple stripe. The brilliance of the colors fades somewhat once the animal dies.

The shell height is up to approximately 30mm.

[edit] Life habits

This species is fairly omnivorous, feeding seasonally on kelp, sessile fauna such as bryozoans, and detritus.

[edit] References

• Integrated Taxonomic Information System. Calliostoma annulatum
• Race Rocks Taxonomy. Calliostoma annulatum
• Key to Invertebrates Found At or Near Walla Walla College Marine Station. Calliostoma annulatum