Seguenzia

Seguenzia
Drawing with apertural view of a shell of Seguenzia elegans
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
(unranked): clade Vetigastropoda
Superfamily: Seguenzioidea
Family: Seguenziidae
Subfamily: Seguenziinae
Tribe: Seguenziini
Genus: Seguenzia
Jeffreys, 1876 [1]
Type species
Seguenzia formosa Jeffreys, J.G., 1876

Seguenzia is a genus of sea snails, marine gastropod mollusks in the family Seguenziidae.[2]

This genus was named after Giuseppe Seguenza (1833-1889), the palaeontologist at Messina, Italy.

Description

The thin shell has a turbinate or subtrochoid shape. It is translucent, the outer layer very slight, somewhat nacreous in fresh specimens. There is no epidermis. The shell contains spiral carinations. The upper part of the body whorl is deeply and widely grooved. The aperture is irregular and sinuous behind. The columella is twisted and abruptly notched below. It has a small tooth-like process. The base of the shell shows a sinus. It is deeply umbilicated or imperforate. The thin operculum is oval, with a subcentral nucleus and with obsolete, numerous concentric lines.[3][4]

Species

According to the World Register of Marine Species (WoRMS), the following species with valid name are included within the genus Seguenzia :[5]

Species brought into synonymy

References

  1. ↑ Jeffreys, J. G. 1876. Preliminary report of the biological results of a cruise in H. M. S. 'Valorous' to Davis Strait in 1875. Proc. R. Soc. London 25: 177-230
  2. ↑ Seguenzia Jeffreys, 1876.  Retrieved through: World Register of Marine Species on 26 March 2013.
  3. ↑ Tryon (1887), Manual of Conchology IX – Solariidae (by William B. Marshall), Ianthinidae, Trichotropidae, Scalariidae, Cerithiidae, Rissoidae, Littorinidae
  4. ↑ J. Gwyn Jeffreys, Preliminary Report of the Biological Results of a Cruise in H.M.S. 'Valorous' to Davis Strait in 1875; Proceedings of the Royal Society of London, Vol. 25, (1876 - 1877), pp. 177-230
  5. ↑ WoRMS : Seguenzia; accessed : 13 September 2010
  6. ↑ Seguenzia antarctica Thiele, 1925.  Retrieved through: World Register of Marine Species on 18 April 2010.
  7. ↑ Seguenzia balicasagensis Poppe, Tagaro & Dekker, 2006.  Retrieved through: World Register of Marine Species on 18 April 2010.
  8. ↑ Seguenzia beloni Poppe, Tagaro & Dekker, 2006.  Retrieved through: World Register of Marine Species on 18 April 2010.
  9. ↑ Seguenzia dabfari Poppe, Tagaro & Dekker, 2006.  Retrieved through: World Register of Marine Species on 18 April 2010.
  10. ↑ Seguenzia elegans Jeffreys, 1885.  Retrieved through: World Register of Marine Species on 18 April 2010.
  11. ↑ Seguenzia elegantissima Poppe, Tagaro & Dekker, 2006.  Retrieved through: World Register of Marine Species on 18 April 2010.
  12. ↑ Seguenzia eritima A. E. Verrill, 1884.  Retrieved through: World Register of Marine Species on 18 April 2010.
  13. ↑ Seguenzia formosa Jeffreys, 1876.  Retrieved through: World Register of Marine Species on 18 April 2010.
  14. ↑ Seguenzia hapala Woodring, 1928.  Retrieved through: World Register of Marine Species on 18 April 2010.
  15. ↑ Seguenzia keikoae Poppe, Tagaro & Dekker, 2006.  Retrieved through: World Register of Marine Species on 18 April 2010.
  16. ↑ Seguenzia monocingulata Seguenza, 1876.  Retrieved through: World Register of Marine Species on 18 April 2010.
  17. ↑ Seguenzia nitida A. E. Verrill, 1884.  Retrieved through: World Register of Marine Species on 18 April 2010.
  18. ↑ Seguenzia trochiformis Poppe, Tagaro & Dekker, 2006.  Retrieved through: World Register of Marine Species on 18 April 2010.
  19. ↑ Salvador, R. B.; Cavallari, D. C.; Simone, L. R. L. (30 October 2014). "Seguenziidae (Gastropoda: Vetigastropoda) from SE Brazil collected by the Marion Dufresne (MD55) expedition". Zootaxa. 3878 (6): 536. doi:10.11646/zootaxa.3878.6.2.
  20. ↑ Seguenzia carinata Jeffreys, 1876.  Retrieved through: World Register of Marine Species on 18 April 2010.
  21. ↑ Seguenzia ionica Watson, 1878.  Retrieved through: World Register of Marine Species on 18 April 2010.
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