''Setia bruggeni'' 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 small
sea snail, 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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* ...
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 ...
or
micromollusk
A micromollusk is a shelled mollusk which is extremely small, even at full adult size. The word is usually, but not exclusively, applied to marine mollusks, although in addition, numerous species of land snails and freshwater mollusks also ...
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 ...
Rissoidae
Rissoidae is a large family of very small and minute sea snails with an operculum, marine gastropod mollusks in the superfamily Rissooidea and the order Littorinimorpha.
Distribution and habitat
This family of snails is found worldwide. They ...
.
It has fresh shells are transparent, whitish or of a light horny colour. The top whorls usually are of the same transparency and colour as the lower ones, less frequently they are somewhat darker and brownish. Ornamental sculpture absent on the lower whorls. The shells are not very solid. There is no labial rib, nor does the aperture show any other peculiarities.
��There is a wide and deep umbilicus. In some shells the end of the body whorl may even be detached from the previous one.
��At a magnification of 40X, about 15 fine and close-set spiral striae may be seen on the protoconch of some specimens.
Description
Distribution
References
* Gofas, S.; Le Renard, J.; Bouchet, P. (2001). Mollusca. in: Costello, M.J. et al. (Ed.) (2001). ''European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification.'' Collection Patrimoines Naturels. 50: pp. 180–213
Rissoidae
Gastropods described in 1984
{{Rissoidae-stub