''Turbonilla atypha'' is a
species of
sea snail
Sea snail is a common name for slow-moving marine gastropod molluscs, usually with visible external shells, such as whelk or abalone. They share the taxonomic class Gastropoda with slugs, which are distinguished from snails primarily by the ...
, a
marine
Marine is an adjective meaning of or pertaining to the sea or ocean.
Marine or marines may refer to:
Ocean
* Maritime (disambiguation)
* Marine art
* Marine biology
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* Marine life
* Marine pollution
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* ...
gastropod
The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda ().
This class comprises snails and slugs from saltwater, from freshwater, and from land. T ...
mollusk in the
family Pyramidellidae, the pyrams and their allies.
[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]
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
The body whorl is part of the morphology of the shell in those gastropod mollusks that possess a coiled shell. The term is also sometimes used in a similar way to describe the shell of a cephalopod mollusk.
In gastropods
In gastropods, the b ...
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.
[ 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](_blank)
/ref>
Distribution
This species occurs in the Atlantic Ocean off Brazil and Uruguay.
References
External links
To Biodiversity Heritage Library (3 publications)
To Encyclopedia of Life
To World Register of Marine Species
{{Taxonbar, from=Q7853971
atypha
Gastropods described in 1899