Supplanaxis nucleus, common name the black Atlantic planaxis, is a species of small sea snail, a marine gastropod mollusk in the family Planaxidae.
Distribution This species occurs in the Caribbean Sea, the Gulf of Mexico and off the Lesser Antilles.
Description The maximum recorded shell length is 17 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 0 m, while the maximum recorded depth is 3 m.
References
Rosenberg, G.; Moretzsohn, F.; García, E. F. (2009). Gastropoda (Mollusca) of the Gulf of Mexico, Pp. 579–699 in: Felder, D.L. and D.K. Camp (eds.), Gulf of Mexico–Origins, Waters, and Biota. Texas A&M Press, College Station, Texas.
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