Turricula (gastropod)

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Turricula
Temporal range: Cretaceous - Recent
File:Clavatulidae - Turricula dimidiata.JPG
Fossil shells of Turricula dimidiata
Scientific classification
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Phylum:
Class:
(unranked):
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Genus:
Turricula

Schumacher, 1817
Type species
Turricula flammea Schumacher, 1817
Synonyms[1]

Surcula H. Adams & A. Adams, 1853

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Turricula is a genus of sea snails, marine gastropod mollusks in the family Clavatulidae.[1]

Taxonomy

Clavatulidae was raised, based on cladistic analysis, from subfamily to the family level by Rosenberg in 1998. It remained regarded as a subfamily of Turridae by several malacologists (Kantor, Sysoev).[1] until a new publication in 2011 [2]

Fossil records

This genus is known in the fossil records from the Cretaceous to the Quaternary (age range: from 70.6 to 0.0 million years ago). Fossils of species within this genus have been found all over the world.[3]

Description

The turriculated shell is fusiform with a long spire. The anal sinus is situated in the infrasutural depression above the peripheral carina. The siphonal canal is long and slightly bent. The operculum has a medio-lateral nucleus. The eyes of the animal are situated at the base of the tentacles. Radula formula : 1-0-1.[4]

Species

File:Surcula faxensis.jpg
Fossil of the extinct species Surcula faxensis at the Geological Museum in Copenhagen
File:Turricula dimidiata 01.JPG
Five views of the shell of Turricula dimidiata (Brocchi, 1814) from the Pliocene of Italy

Species within the genusTurricula include:[3][5]

Species brought into synonymy
Further investigation needed

References

  1. 1.0 1.1 1.2 World Register of Marine Species: Clavatulidae. accessed 1 April 2010.
  2. Lua error in package.lua at line 80: module 'strict' not found.
  3. 3.0 3.1 Fossilworks
  4. George Washington Tryon, Manual of Conchology vol. VI, p. 158; 1884 (described as the genus Surcula)
  5. WoRMS : Turricula; accessed : 28 August 2011
  6. Fossile

External links