Pomaulax japonicus

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Pomaulax japonicus
Pomaulax japonicus.jpg
Shell of Pomaulax japonicus (Dunker, 1844), measuring 47.7 mm in height by 74.8 mm diameter, collected with tangle nets at 20 m depth off Pt. Daio, Shima-cho, in Japan.
Scientific classification e
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Clade: Vetigastropoda
Superfamily: Trochoidea
Family: Turbinidae
Genus: Pomaulax
Species: P. japonicus
Binomial name
Pomaulax japonicus
(Dunker, 1844)
  • Astralium (Pomaulax) japonicum (Dunker, 1844)
  • Trochus japonicus (Dunker, 1845)

Pomaulax japonicus, the Japanese star shell, is a species of sea snail, a marine gastropod mollusk in the family Turbinidae, the turban snails.[1]


The size of the shell attains 90 mm. The large, imperforate shell has a depressed-conic shape. It is pale yellowish. The six whorls are planulate above, and obliquely tuberculate-plicate. The periphery is expanded, compressed, carinated, bearing wide nodose spines. The base of the shell is planulate, with concentric tuberculate lirae. The white umbilical tract is , callous and depressed. The aperture is transversely dilated, subrhomboidal, and angulate.[2]


This marine species occurs off Japan and Korea.


  • Alf A. & Kreipl K. (2011) The family Turbinidae. Subfamilies Turbininae Rafinesque, 1815 and Prisogasterinae Hickman & McLean, 1990. In: G.T. Poppe & K. Groh (eds), A Conchological Iconography. Hackenheim: Conchbooks. pp. 1–82, pls 104-245.

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