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Apologies for the problems which may have been evident between 6:00, 17/5/18 and 10:15, 18/5/18 UK Time. I think that they are fixed now.

Calliostoma variegatum

Carpenter, P.P., 1864 Variable Top Shell Shell size 25 mm Alaska - Baja California, Mexico
Taxonomic Information
ClassGASTROPODA VETIGASTROPODA
OrderTROCHIDA
SuperFamilyTROCHOIDEA
FamilyCALLIOSTOMATIDAE CALLIOSTOMATINAE
open bookPage/Plate
Compendium of Seashellsp 36/3.3
Taxonomic Atlas . . Benthic Fauna . .The Mollusca Part 2 The Gastropoda.
cameraImage Acknowledgments
1 Worldwide Specimen Shells
Calliostoma_variegatum.jpg