Gibbula

Gibbula is a genus of small sea snails, marine gastropod molluscs in the subfamily Cantharidinae of the family Trochidae, the top snails.[2]

Gibbula
Temporal range: Late Cretaceous–Recent
Five live individuals of Gibbula divaricata from the Mediterranean Sea
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Vetigastropoda
Order: Trochida
Superfamily: Trochoidea
Family: Trochidae
Genus: Gibbula
Risso, 1826[1]
Type species
Trochus magus
Linnaeus, C., 1758
Synonyms[2]
  • Colliculus Monterosato, 1888
  • Forskalena Iredale, 1918
  • Forskalia H. Adams & A. Adams, 1854 (preoccupied by Forskalia Kölliker, 1853 (Hydrozoa))
  • Gibbula (Magulus) Monterosato, 1888
  • † Gibbula (Moniliopsidea) Tomlin, 1930
  • † Gibbula (Moniliopsis) Cossmann, 1918 (invalid: junior homonym of Moniliopsis Conrad, 1865; Amonilea and Moniliopsidea are replacement names)
  • † Gibbula (Pseudodiloma) Cossmann, 1888 · accepted, alternate representation
  • Moniliopsidea Tomlin, 1930 (junior objective synonym of Amonilea Cossmann, 1920)
  • Trochus (Gibbula)

Taxonomy

Affenzeller et al. (2017) have shown than several Mediterranean species hitherto assigned to Gibbula were forming a separate clade and should be assigned to the genus Steromphala. They included in the restricted Gibbula clade the species G. magus (type species), G. fanulum and G. ardens. However many other species were not taken into account in this paper and will remain listed in WoRMS under Gibbula until their phylogenetic position is assessed, but possibly do not belong to the restricted Gibbula clade. [2]

Distribution

The species in this genus occur through all seas, except on the coast of the American continent.

Description

The cyrtoconoid (= approaching a conical shape but with convex sides) shell is usually perforate or umbilicate. The spire is moderately elevated. The whorls are often gibbous or tuberculose beneath the sutures, smooth or spirally ribbed. The last whorl is generally angular at the periphery. The aperture is subrhomboidal. The columella is oblique, dentate or subsinuous at the base. The outer lip is acute. The central tooth and the lateral teeth of the radula have well-developed denticulate cusps. The outer lateral teeth are wider.[3]

Species

Species within the genus Gibbula include.[4][5][6]

Fossil Gibbula sp. from the Pliocene of Cyprus. Note small predation scars.
Taxon inquirendum
  • Gibbula incitabilis Locard, 1904
  • Gibbula sculpturata Locard, 1898

Species brought into synonymy
Nomen dubium
  • Gibbula rosea (Gmelin, 1791)

References
  1. Risso A. (1826). H.N. Europe 4: 134.
  2. Bouchet, P.; Gofas, S. (2011). Gibbula Risso, 1826. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=138590 on 2011-04-02
  3. G.W. Tryon (1889) Manual of Conchology XI p. 12
  4. MarLIN: The Marine Life Information Network for Britain & Ireland
  5. gastropods.com Archived 2007-09-27 at the Wayback Machine
  6. The Paleobiology Database: Gibbula
  7. George Washington Tryon, Structural and systematic conchology: an introduction to the study of the Mollusca, p. 219; 1882
  8. "Gibbula (Gibbula) aurantia". Gastropods.com. Retrieved 12 January 2019.
  9. "Gibbula fulgens". Gastropods.com. Retrieved 12 January 2019.
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