Trisha Shetty (Editor)

Seguenzia

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Kingdom
  
Animalia

Class
  
Gastropoda

Family
  
Seguenziidae

Phylum
  
Mollusca

Superfamily
  
Seguenzioidea

Subfamily
  
Seguenziinae

Seguenzia

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

Contents

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.

Species

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

Species brought into synonymy
  • Seguenzia carinata Jeffreys, 1876 synonym of Carenzia carinata (Jeffreys, 1877)
  • Seguenzia cazioti Dautzenberg, 1925: synonym of Quinnia cazioti (Dautzenberg, 1925)
  • Seguenzia ionica Watson, 1878 synonym of Quinnia ionica (Watson, 1878)
  • Seguenzia laxa Jeffreys, 1885: synonym of Haloceras laxa (Jeffreys, 1885)
  • Seguenzia melvillii Schepman, 1909: synonym of Carenzia melvillii (Schepman, 1909)
  • Seguenzia polita Verco, 1906: synonym of Quinnia polita (Verco, 1906)
  • Seguenzia reticulata (Philippi, 1844): synonym of Ancistrobasis reticulata (Philippi, 1844)
  • Seguenzia rushi Dall, 1927: synonym of Quinnia rushi (Dall, 1927)
  • Seguenzia siberutensis Thiele, 1925: synonym of Halystina siberutensis (Thiele, 1925)
  • Seguenzia simplex Barnard, 1963: synonym of Halystina simplex (Barnard, 1963)
  • Seguenzia sykesi Schepman, 1909: synonym of Quinnia sykesi (Schepman, 1909)
  • Seguenzia tricarinata Jeffreys, 1885: synonym of Haloceras tricarinata (Jeffreys, 1885)

    • References

    Seguenzia Wikipedia
    (Text) CC BY-SA