Emarginula

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Emarginula
Emarginula striatula
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
(unranked): clade Vetigastropoda
Superfamily: Fissurelloidea
Family: Fissurellidae
Genus: Emarginula
Lamarck, 1801
Type species
Emarginula (Emarginula) conica Lamarck, J.B.P.A. de, 1801
Species

See text.

Synonyms
  • Emarginella Pilsbry in Tryon & Pilsbry, 1891
  • Emarginulus Montfort, 1810
  • Entomella Cotton, 1945
  • Notamella Cotton, 1957

Emarginula is a genus of small keyhole limpets, marine gastropod molluscs in the family Fissurellidae.[1]

Description

The oval shell is obliquely conical with a backward-pointing recurved apex. There is a deep incision in the anterior margin. A distinct anal fasciole extends upwards from this incision. The surface is latticed, sculptured with radial ribs. There is no septum inside.[2]

Radula

The radula has a dental formula of [many].1.4.1.4.1.[many],[3] with a wide, rectangular, acuspate rachidian tooth.[4] The various genera have a few dozen rows of teeth.[3]

Species

According to the World Register of Marine Species (WoRMS), species within the genus Emarginula include:[1]

The following species is mentioned in other databases : The Indo-Pacific Molluscan Database also mentions the following species with names in current use :[6]

  • Emarginula curvata Schepman, 1908
  • Emarginula dubia Schepman, 1908
  • Emarginula fenestrella Deshayes, 1863
  • Emarginula fulginea A. Adams, 1851
  • Emarginula multisquamosa Schepman, 1908
  • Emarginula sublaevis Schepman, 1908
Subgenus Emarginula Lamarck, 1801
  • Emarginula bellula A. Adams, 1851
  • Emarginula clypea A. Adams, 1852
  • Emarginula cucullata Adams, 1851
  • Emarginula fissurata A. Adams, 1851
  • Emarginula harmilensis Sturany, 1903
  • Emarginula obovata A. Adams, 1852
  • Emarginula plana Schepman, 1908
  • Emarginula puncticulata Adams, 1852
  • Emarginula scabricostata A. Adams, 1851
  • Emarginula scabriuscula A. Adams, 1852
  • Emarginula scutellata Deshayes, 1863
Species brought into synonymy
[1]

References

  1. ↑ 1.0 1.1 1.2 Bouchet, P.; Gofas, S.; Rosenberg, G. (2012). Emarginula Lamarck, 1801. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=138012 on 2013-01-13
  2. ↑ Tryon, George W. Jr. (1879-1898). Manual of Conchology, structural and systematic. Academy of Natural Sciences, Philadelphia. p. 248. 
  3. ↑ 3.0 3.1 Torr, C.M. (1914). "Radulæ of some South Australian Gasteropoda". Transactions of the Royal Society of South Australia. 38: 362–368. 
  4. ↑ Keen, A. Myra (1971-06-01). Sea shells of tropical west America: marine mollusks from Baja California to Peru. ISBN 978-0-8047-0736-7. 
  5. ↑ Gastropods.com : Emarginula striatula
  6. ↑ OBIS : Emarginula
  • "Emarginula". Integrated Taxonomic Information System. 
  • Powell A W B, New Zealand Mollusca, William Collins Publishers Ltd, Auckland, New Zealand 1979 ISBN 0-00-216906-1
  • Piani P. (1985). Revisione del genere Emarginula Lamarck, 1801 in Mediterraneo. Lavori, Società Italiana di Malacologia 21: 193-238
  • Gofas, S.; Le Renard, J.; Bouchet, P. (2001). Mollusca, in: Costello, M.J. et al. (Ed.) (2001). European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels, 50: pp. 180–213
  • Rolán E., 2005. Malacological Fauna From The Cape Verde Archipelago. Part 1, Polyplacophora and Gastropoda.
  • Spencer, H.; Marshall. B. (2009). All Mollusca except Opisthobranchia. In: Gordon, D. (Ed.) (2009). New Zealand Inventory of Biodiversity. Volume One: Kingdom Animalia. 584 pp
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