Cyphoma rhomba is a species of sea snail in the family Ovulidae, the ovulids, cowry allies or false cowries.
Description The maximum recorded shell length is 22.7 mm.Welch J. J. (2010). "The "Island Rule" and Deep-Sea Gastropods: Re-Examining the Evidence". PLOS One 5(1): e8776. .
Habitat The minimum recorded depth is 18 m. The maximum recorded depth is 18 m.
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