''Syrnola collea'' is a
species
In biology, a species is the basic unit of Taxonomy (biology), classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of ...
of
sea snail, a
marine
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gastropod mollusk
Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is es ...
in the
family
Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...
Pyramidellidae
Pyramidellidae, common name the pyram family, or pyramid shells, is a voluminous taxonomic family of mostly small and minute ectoparasitic sea snails, marine heterobranch gastropod molluscs. The great majority of species of pyrams are micr ...
, the pyrams and their allies.
[WoRMS (2011). ''Syrnola collea'' (Bartsch, 1926). Accessed through: ]World Register of Marine Species
The World Register of Marine Species (WoRMS) is a taxonomic database that aims to provide an authoritative and comprehensive list of names of marine organisms.
Content
The content of the registry is edited and maintained by scientific speciali ...
at http://www.marinespecies.org/aphia.php?p=taxdetails&id=575948 on 2012-01-12
Description
The shell is small, bluish-white, and semi-translucent. It has a very irregularly elongate-conic shape. The early
whorl
A whorl ( or ) is an individual circle, oval, volution or equivalent in a whorled pattern, which consists of a spiral or multiple concentric objects (including circles, ovals and arcs).
Whorls in nature
File:Photograph and axial plane flo ...
s are decollated. The four remaining whorls are almost flattened, and appressed at the summit. They are marked by incremental lines only. The
sutures are scarcely impressed. The preceding whorl shines through the appressed summit, and the anterior termination of the preceding
whorl forms a zone that gives to the shell a false suture effect. The periphery of the
body whorl is well rounded. The base of the shell is short, well rounded and smooth. The small
aperture
In optics, an aperture is a hole or an opening through which light travels. More specifically, the aperture and focal length of an optical system determine the cone angle of a bundle of rays that come to a focus in the image plane.
An ...
is oval. The posterior angle is acute. The
outer lip is thickened at the posterior angle and also at the base and slightly so in the middle. It forms therefore a rather conspicuous peristome reinforced within by three strong lamellar folds. The inner lip is stout, reflected over and appressed to the base. The parietal wall is covered by a moderately thick callus.
[P. Barsch (1926), Additional New Mollusks from Santa Elena Bay, Ecuador; Proceedings of U.S. National Museum vol. 69 no. 2646]
Distribution
This type specimen of this marine species was found in the Pacific Ocean off Santa Elena Bay,
Ecuador
Ecuador ( ; ; Quechuan languages, Quechua: ''Ikwayur''; Shuar language, Shuar: ''Ecuador'' or ''Ekuatur''), officially the Republic of Ecuador ( es, República del Ecuador, which literally translates as "Republic of the Equator"; Quechuan ...
.
References
External links
To World Register of Marine Species
{{Taxonbar, from=Q7663436
Pyramidellidae
Gastropods described in 1926