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''Cossmannica'' is a
genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...
of
sea snail Sea snails are slow-moving marine (ocean), marine gastropod Mollusca, molluscs, usually with visible external shells, such as whelk or abalone. They share the Taxonomic classification, taxonomic class Gastropoda with slugs, which are distinguishe ...
s, marine
gastropod Gastropods (), commonly known as slugs and snails, belong to a large Taxonomy (biology), taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, freshwater, and fro ...
mollusk Mollusca is a phylum of protostomic invertebrate animals, whose members are known as molluscs or mollusks (). Around 76,000  extant species of molluscs are recognized, making it the second-largest animal phylum after Arthropoda. The ...
s in the
family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...
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 micromol ...
, the pyrams and their allies.Rosenberg, G. (2011). ''Cossmannica'' Dall & Bartsch, 1904. 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 catalogue and list of names of marine organisms. Content The content of the registry is edited and maintained by scien ...
at http://www.marinespecies.org/aphia.php?p=taxdetails&id=588553 on 2011-11-29


Description

The surface of the shell is polished, marked by faint lines of growth and microscopic spiral striations. The shell is not umbilicated. The basal fasciole is absent. The
aperture In optics, the aperture of an optical system (including a system consisting of a single lens) is the hole or opening that primarily limits light propagated through the system. More specifically, the entrance pupil as the front side image o ...
is suboval. There are two
columella Lucius Junius Moderatus Columella (, Arabic: ) was a prominent Roman writer on agriculture in the Roman Empire. His in twelve volumes has been completely preserved and forms an important source on Roman agriculture and ancient Roman cuisin ...
r folds.A Monograph of West American Pyramidellid Mollusks, United States National Museum Bulletin 68, p.10; 1909
/ref>


Species

There are nine known species within the genus ''Cossmannica'', these include the following: * '' Cossmannica aciculata'' A. Adams, 1855 * '' Cossmannica bancoensis'' Saurin, 1959 * '' Cossmannica behainei'' Saurin, 1959 * '' Cossmannica catinati'' Saurin, 1959 * '' Cossmannica champaensis'' Saurin, 1959 * '' Cossmannica discreta'' Saurin, 1959 * '' Cossmannica exesa'' Laseron, 1959 * '' Cossmannica jacksonensis'' (Dall & Bartsch, 1906) * '' Cossmannica subcarina'' Laseron, 1959


References


External links


World Register of Marine Species
Pyramidellidae {{Pyramidellidae-stub