Atlanta helicinoidea

Atlanta helicinoidea is a species of sea snail, a holoplanktonic marine gastropod mollusk in the family Atlantidae.

Description

The maximum recorded shell length is 4 mm.

(Described in Latin as Atlanta helicinoides) The shell is glassy, disc-shaped, broadly keeled, translucent, and very thin. The spire is very small, protruding, and conical. There are seven whorls, which are convex-depressed, with the body whorl being keeled. This keel is bordered at the base with a rust-colored margin. The aperture is ovate-acute and notched at the front; the peristome (the lip of the shell) is thin and sharp.

The operculum is glassy, oval, thin, translucent, and has only a few spirals.

Distribution

This marine species is circumglobal and is seen near shore of East and South China Sea.。

Habitat

Minimum recorded depth is 0 m. Maximum recorded depth is 0 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
• Jensen, R. H. (1997). A Checklist and Bibliography of the Marine Molluscs of Bermuda. Unp., 547 pp
• Janssen, A.W. (2012). Late Quaternary to Recent holoplanktonic Mollusca (Gastropoda) from bottom samples of the eastern Mediterranean Sea: systematics, morphology. Bollettino Malacologico. 48 (suplemento 9): 1-105.

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