Alvania dejongi is a species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Rissoidae.
Distribution This species occurs in the tropical Western Atlantic Ocean.
Description The maximum recorded shell length is 1.25 mm.Welch J. J. (2010). "The "Island Rule" and Deep-Sea Gastropods: Re-Examining the Evidence". PLoS ONE 5(1): e8776. .
Habitat Minimum recorded depth is 0 m. Maximum recorded depth is 23 m.
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