Otukaia

Otukaia is a genus of medium-sized sea snails, marine gastropod molluscs in the family Calliostomatidae, the top shells. Otukaia has long been considered a subspecies of Calliostoma and is still treated as such by many authorities. Snails in this genus are characterized by their relatively large, silky-white, thin shell. They lack an umbilicus. Th...
Found on http://en.wikipedia.org/wiki/Otukaia
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