Guttula

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

Guttula
Guttula sibogae
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Vetigastropoda
Family: Seguenziidae
Subfamily: Guttulinae
Genus: Guttula
Schepman, 1908 [1]
Type species
Guttula sibogae
Schepman, 1908

Description

(Original description by Schepman) The small, shell has a conoidal shape. It is smooth, pearly, and perforate. The aperture is rounded, with an angle at the base. The operculum contains few whorls.

It is chiefly on account of the peculiar radula, that Schepman had located the then only species in a new genus.[3]

Quin (1998) adds the following specifications.

Shell: The shell has no peripheral carina, no axial riblets, no midwhorl angulation, no spiral lirae, no basal, posterior or anterolateral sinus, no columellar sinus. The aperture has a circular shape. The columellar tooth is absent. There is no umbilical septum. The shell has punctate microsculpture.

Radula: the rachidian tooth is broader than high and has the lateral wings prominent. The lateral tooth cusp is broad to absent.[4]

Species

Species within the genus Guttula include:

References
  1. Schepman 1908, Siboga-Exp., 49 (1a), no. 39, 61.
  2. Guttula. Retrieved through: World Register of Marine Species on 21 June 2012.
  3. Schepman 1908-1913, The Prosobranchia of the Siboga Expedition; Leyden,E. J. Brill,1908-13
  4. James F. Quinn Jr., (1991), Systematic Position of Basilissopsis and Guttula, and a Discussion of the Phylogeny of the Seguenzioidea (Gastropoda: Prosobranchia), Bulletin of Marine Science, Volume 49, Numbers 1-2, September 1991 , pp. 575-598(24)
  5. Guttula galatheae Knudsen, 1964. Retrieved through: World Register of Marine Species on 18 April 2010.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.