Cochlespira
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''Cochlespira'' 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 ...
Cochlespiridae Cochlespiridae is a taxonomic family of predatory sea snails, marine gastropod mollusks in the superfamily Conoidea. This family is not well differentiated morphologically, and there is poor congruence between the molecular and shell characters. ...
.


Description

The species in this genus are characterized by their elongated fusiform spire and a long siphonal canal. The whorls show on their edge spinose projections. The shell is moderate in size, with a subacute, few whorled, glassy protoconch. It has an elongated slender, straight
siphonal canal The siphonal canal is an anatomical feature of the shells of certain groups of sea snails within the clade Neogastropoda. Some sea marine gastropods have a soft tubular anterior extension of the mantle called a siphon through which water i ...
. The
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). In nature File:Photograph and axial plane floral diagra ...
s are tabulated by a sharp recurved spinose or beaded keel, between which and the suture the surface is concave, nearly smooth. The
anal sulcus The anal sulcus, also called the anal sinus or anal canal, in Gastropods is a notch, a shelly tube at the top of the Aperture (mollusc), aperture. It is the first notch close to the Suture (anatomy), suture. It houses the anal siphon through which t ...
is deep, narrow, the fasciole separated from the suture by a beaded ridge, the outer margin of the fasciole not elevated. Type † ''Pleurotoma cristata'' Conrad, 1848.
Oligocene The Oligocene ( ) is a geologic epoch (geology), epoch of the Paleogene Geologic time scale, Period that extends from about 33.9 million to 23 million years before the present ( to ). As with other older geologic periods, the rock beds that defin ...
fossil. This group is extremely close to '' Ancistrosyrinx'' Dall, 1881, the latter differing only by having the anal sulcus at the suture, with no intervening ridge, while the outer margin of the fasciole has an elevated lamella between which and the reflected keel at the shoulder there is an excavated channel. These differences hold good between the Oligocene and the recent forms, so far known, without exception. The recent forms have an operculum like that of ''
Leucosyrinx ''Leucosyrinx'' is a genus of sea snails, marine gastropod mollusks in the family Pseudomelatomidae.WoRMS (2011). Leucosyrinx Dall, 1889. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&i ...
''.


Distribution

Species from this genus occur in very deep water in the Indo-West Pacific and off Australia (Queensland).


Species

Species within the genus ''Cochlespira'' include: * '' Cochlespira beuteli'' Powell, 1969 * ''
Cochlespira bevdeynzerae ''Cochlespira bevdeynzerae'' is a species of sea snail, a marine gastropod mollusk in the family Cochlespiridae.Bouchet, P. (2015). Cochlespira bevdeynzerae. In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http:// ...
'' Garcia, 2010 * '' Cochlespira cavalier'' Garcia, 2010 * '' Cochlespira cedonulli'' (Reeve, 1843) * '' Cochlespira crispulata'' (Martens, 1901) * ''
Cochlespira elegans ''Cochlespira elegans'', common name the elegant star turrid, is a species of sea snail, a marine gastropod mollusk in the family Cochlespiridae. Description The size of an adult shell varies between 35 mm and 60 mm. The white shell i ...
'' (Dall, 1881) * '' Cochlespira elongata'' Simone, 1999 * † '' Cochlespira engonata'' Conrad, 1865 (extinct species from the Claibornean, Texas, USA) * '' Cochlespira kuroharai'' (Kuroda, 1959) * '' Cochlespira laurettamarrae'' Garcia, 2010 * '' Cochlespira leeana'' Garcia, 2010 * † ''
Cochlespira maorum ''Cochlespira'' is a genus of sea snails, marine gastropod mollusks in the family (biology), family Cochlespiridae. Description The species in this genus are characterized by their elongated fusiform spire and a long siphonal canal. The whorls s ...
'' (P. Marshall & R. Murdoch, 1923) * '' Cochlespira pulchella'' (Schepman, 1913) * '' Cochlespira pulcherrissima'' (Kira, 1955) * '' Cochlespira radiata'' (Dall, 1889) * '' Cochlespira simillima'' Powell, 1969 * '' Cochlespira travancorica'' (Smith E. A., 1896) * '' Cochlespira zanzibarica'' Sysoev, 1996


References

* Powell A.W.B. (1942). ''The New Zealand Recent and fossil Mollusca of the family Turridae with general notes on turrid nomenclature and systematics''. Bulletin of the Auckland Institute and Museum. 2: 1-188, 14 pls. * Powell, A.W.B. 1966. ''The molluscan families Speightiidae and Turridae, an evaluation of the valid taxa, both Recent and fossil, with list of characteristic species.'' Bulletin of the Auckland Institute and Museum. Auckland, New Zealand 5: 1-184, pls 1-23 * Powell, A.W.B. 1969. ''The family Turridae in the Indo-Pacific. Part. 2. The subfamily Turriculinae.'' Indo-Pacific Mollusca 2(10): 207-415, pls 188-324 * Long, D.C. 1981. ''Late Eocene and early Oligocene Turridae (Gastropoda: Prosobranchiata) of the Brown's Creek and Glen Aire Clays, Victoria, Australia.'' Memoirs of the National Museum of Victoria 42: 15-55 * Wilson, B. 1994. ''Australian Marine Shells. Prosobranch Gastropods''. Kallaroo, WA : Odyssey Publishing Vol. 2 370 pp. {{Taxonbar, from=Q3141318