''Anatoma japonica'' is a
species of minute
sea snail
Sea snail is a common name for slow-moving marine gastropod molluscs, usually with visible external shells, such as whelk or abalone. They share the taxonomic class Gastropoda with slugs, which are distinguished from snails primarily by the ...
, a
marine
Marine is an adjective meaning of or pertaining to the sea or ocean.
Marine or marines may refer to:
Ocean
* Maritime (disambiguation)
* Marine art
* Marine biology
* Marine debris
* Marine habitats
* Marine life
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* ...
gastropod
The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda ().
This class comprises snails and slugs from saltwater, from freshwater, and from land. T ...
mollusk or
micromollusk
A micromollusk is a shelled mollusk which is extremely small, even at full adult size. The word is usually, but not exclusively, applied to marine mollusks, although in addition, numerous species of land snails and freshwater mollusks also ...
in the
family Anatomidae
Anatomidae is a family of minute sea snails, marine gastropod mollusks in the clade Vetigastropoda (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).
Anatomidae was raised to the rank of subfamily to the rank of family ...
.
[Bouchet, P. (2012). ''Anatoma japonica'' (A. Adams, 1862). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=492990 on 2013-02-16]
Description
The length of the shell varies between 1 mm and 2.5 mm. It has a trochiform shell. The
spire contains 3½ rather convex
whorl
A whorl ( or ) is an individual circle, oval, volution or equivalent in a whorled pattern, which consists of a spiral or multiple concentric objects (including circles, ovals and arcs).
Whorls in nature
File:Photograph and axial plane floral ...
s. They are finely decussated by elevated longitudinal striae and close striae. The longitudinal striae are flexuous at the base. The
aperture is subcircular. The outer
lip is dilated and reflexed in the middle.
G.W. Tryon (1890), Manual of Conchology vol. XII, p. 59
(described as ''Anatomus japonicus'')
Distribution
This marine species occurs in deep water off the Philippines, Japan
Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...
, and Southeast Africa.
References
* Geiger D.L. (2006). ''Eight new species of Scissurellidae and Anatomidae (Mollusca: Gastropoda: Vetigastropoda) from around the world, with discussion of two senior synonyms''. Zootaxa 1128:1-33
* Geiger D.L. (2012) ''Monograph of the little slit shells. Volume 1. Introduction, Scissurellidae. pp. 1-728. Volume 2. Anatomidae, Larocheidae, Depressizonidae, Sutilizonidae, Temnocinclidae.'' pp. 729–1291. Santa Barbara Museum of Natural History Monographs Number 7.
External links
Encyclopedia of Life
World Register of Marine Species
*
{{Taxonbar, from=Q4752261
Anatoma
Gastropods described in 1862