''Pseudococculina'' is a
genus
Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...
of
sea snail
Sea snails are slow-moving marine (ocean), marine gastropod Mollusca, molluscs, usually with visible external shells, such as whelk or abalone. They share the Taxonomic classification, taxonomic class Gastropoda with slugs, which are distinguishe ...
s, marine
gastropod
Gastropods (), commonly known as slugs and snails, belong to a large Taxonomy (biology), taxonomic class of invertebrates within the phylum Mollusca called Gastropoda ().
This class comprises snails and slugs from saltwater, freshwater, and fro ...
mollusc
Mollusca is a phylum of protostome, protostomic invertebrate animals, whose members are known as molluscs or mollusks (). Around 76,000 extant taxon, extant species of molluscs are recognized, making it the second-largest animal phylum ...
s in the
family
Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...
Pseudococculinidae
Pseudococculinidae is a family of small sea snails or false limpets, marine gastropod mollusks in the superfamily Lepetelloidea (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).Gofas, S. (2012). Pseudococculinidae. Acces ...
.
Description
The white shell has a patelliform shape with a posterior, inclined
apex
The apex is the highest point of something. The word may also refer to:
Arts and media Fictional entities
* Apex (comics)
A-Bomb
Abomination
Absorbing Man
Abraxas
Abyss
Abyss is the name of two characters appearing in Ameri ...
and a compressed, subspiral nucleus. Inside it has a porcellaneous, muscle-scar horseshoe-shaped, interrupted over the head.
The animal has a plumate gill, at the right side of the head. The right tentacle is thickened. There are two epipodial (i.e. situated in the lateral grooves between foot and mantle) filaments at the posterior part of the foot. The
radula
The radula (; : radulae or radulas) is an anatomical structure used by mollusks for feeding, sometimes compared to a tongue. It is a minutely toothed, chitinous ribbon, which is typically used for scraping or cutting food before the food enters ...
has large rhachidian teeth, with the cusp wanting or very obsolete. The fïrst lateral teeth are triangular, followed by 3 smaller, contorted laterals, with distinct
cusps, a large cusped fifth lateral, and numerous uncini.
Species
Species within the genus ''Pseudococculina'' include:
* ''
Pseudococculina granulata''
Schepman, 1908
* ''
Pseudococculina gregaria''
B.A. Marshall, 1986
* ''
Pseudococculina rimula''
Simone & Cunha, 2003
* ''
Pseudococculina rosea''
Habe, 1952
* ''
Pseudococculina rugosoplicata''
Schepman, 1908[Bouchet, P. (2012). ''Pseudococculina rugosoplicata'' Schepman, 1908. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=579371 on 2012-11-01]
* ''
Pseudococculina subcingulata''
(Kuroda & Habe, 1949)
;Species brought into synonymy:
* ''Pseudococculina concentrica''
Thiele, 1909: synonym of ''
Amphiplica concentrica''
(Thiele, 1909)
* ''Pseudococculina gradata''
B.A. Marshall, 1986: synonym of ''
Copulabyssia gradata''
(B. A. Marshall, 1986)
References
* Higo, S., Callomon, P. & Goto, Y. (2001) Catalogue and Bibliography of the Marine Shell-Bearing Mollusca of Japan. Gastropoda Bivalvia Polyplacophora Scaphopoda Type Figures. Elle Scientific Publications, Yao, Japan, 208 pp.
External links
Schepman M.M. (1908). The Prosobranchia of the Siboga Expedition. Part I. Rhipidoglossa and Docoglossa. Siboga Expeditie, 49a: 1-107, pl. 1-9. Leiden, E. J. Brill
{{Taxonbar, from=Q7254668
Pseudococculinidae
Gastropod genera