Calliostoma benthicola is a species of medium - sized deepwater sea snail the calliostoma top snails .
Medium - sized deepwater sea snail is a marine gastropod mollusc in the family Calliostomatidae .
Calliostoma benthicola is a species of medium - sized deepwater sea snail , a marine gastropod mollusc in the family Calliostomatidae , the calliostoma top snails .