Turbonilla atypha

Turbonilla atypha is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies.[2]

Turbonilla atypha
Scientific classification
Kingdom:
Animalia
Phylum:
Mollusca
Class:
Gastropoda
(unranked):
clade Heterobranchia
clade Euthyneura
clade Panpulmonata
Superfamily:
Pyramidelloidea
Family:
Pyramidellidae
Subfamily:
Turbonillinae
Genus:
Turbonilla
Species:
T. atypha
Binomial name
Turbonilla atypha
Bush, 1899 [1]
Synonyms

Chemnitzia atypha (Bush, 1899)

Description

The thick shell is long and moderately slender. The shell grows to a length of 7.5 mm. It is opaque white, tinted with yellow at the sutures and has considerable lustre. The larger type specimen has 10 flattened whorls on the teleoconch, having a slight bulge just above the well marked suture. The transverse ribs number about 20. They are ill-defined, not reaching quite to the lower suture. They are broadly rounded, straight, very oblique, gradually decreasining in prominence as the shell increases, so that on the body whorl they show but faintly. The interspaces are narrow and shallow. The base of the shell iselongate, well-rounded and smooth. The aperture of the type specimen is badly broken. The inner lip is considerably thickened and reflected.[1]

Distribution

This species occurs in the Atlantic Ocean off Brazil and Uruguay.

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References
  1. K.J. Bush (1899), Descriptions of New Species of Turbonilla of the Western Atlantic Fauna, with Notes on Those Previously Known; Proceedings of the Academy of Natural Sciences of Philadelphia, Vol. 51, No. 1 (Jan. - Mar., 1899), pp. 170
  2. Rosenberg, G. (2011). Turbonilla atypha Bush, 1899. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=533544 on 2012-03-01
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