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Molluscs › Calliostomatidae

Three-colored Top Shell

Calliostoma tricolor

Wildlife study photograph from iNaturalist.
(c) joelm95060, some rights reserved (CC BY-NC)

24 photos

Study shows up to four per card, from different observers, so you learn the species rather than one picture. Heart the good ones and swap any you do not like.

Photos you add are credited to you, and you keep the copyright.

Easily confused with

Study checks a spoken answer against these, and tells you which one you named.

Where it is recorded

Records by month in California.January 64, February 55, March 57, April 71, May 69, June 51, July 43, August 44, September 56, October 57, November 74, December 57.
United States701
California698
Nevada3

Counts show where people looked, not only where it lives.

Traits

Physical

  • Shell-bearingProtected by a hard shellFrom its classification

Classification

KingdomAnimals · Animalia
PhylumMolluscs · Mollusca
ClassGastropods · Gastropoda
OrderTrochida
FamilyCalliostomatidae
GenusCalliostoma

Sources

Remember the name next time.

Practise Three-colored Top Shell with real photos from different observers. Say the name out loud, and it comes back just before you would forget it.