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

Subgenus Emarginula Lamarck, 1801
Subgenus Emarginula (Subzeidora) Iredale, 1924
Species brought into synonymy
[1]

References

  1. ^ a b c 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. ^ a b Torr, C.M. (1914). "Radulæ of some South Australian Gasteropoda" (PDF). 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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