''Tropidoturris simplicicingula'' 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 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 ...

Borsoniidae Borsoniidae is a monophyletic family of small to medium-sized sea snails, marine gastropod mollusks in the superfamily Conoidea.Bouchet, P. (2011). Borsoniidae. Accessed through: World Register of Marine Species at http://www.marinespecies.or ...

.WoRMS (2015). Tropidoturris simplicicingula. In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=435089 on 2016-04-06 There is one subspecies: ''Tropidoturris simplicicingula pondo'' Kilburn, 1986

Description

The size of the biconic shell attains 19.8 mm. Characteristic for this species is the fact that the shell has no axial ribs. The narrower spiral lirae are declivous. The shoulder cord is stronger to carinate.Kilburn R.N. (1986). ''Turridae (Mollusca: Gastropoda) of southern Africa and Mozambique. Part 3. Subfamily Borsoniinae''. Annals of the Natal Museum. 27: 633–720

Distribution

This marine species occurs off

Agulhas Bank The Agulhas Bank (, from Portuguese for Cape Agulhas, ''Cabo das Agulhas'', "Cape of Needles") is a broad, shallow part of the southern African continental shelf which extends up to south of Cape Agulhas before falling steeply to the abyssal ...

, South Africa

References

* Barnard, K. H. 1958. ''Contributions to the knowledge of South African marine Mollusca. Part 1. Gastropoda: Prosobranchiata: Toxoglossa''. Ann. S. Afr. Mus. 44: 73–163. * Steyn, D.G. & Lussi, M. (1998) ''Marine Shells of South Africa. An Illustrated Collector’s Guide to Beached Shells''. Ekogilde Publishers, Hartebeespoort, South Africa, ii + 264 pp. page(s): 156

External links

* {{DEFAULTSORT:Tropidoturris Simplicicingula Endemic molluscs of South Africa simplicicingula Gastropods described in 1958