''Fossarina petterdi'' is a
species of very small
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
* Marine pollution
Military
* ...
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 ...
mollusc
Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is esti ...
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 Trochidae, the top snails.
[Marshall, B. (2013). Fossarina petterdi Crosse, 1870. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=719228 on 2014-03-03]
Description
The shell grows to a length of 4 mm. The shell is narrowly umbilicated, faintly spirally striate, with hardly visible longitudinal striae. It is dark purplish black, with a few irregular white markings. The three whorls are convex. The
body whorl
The body whorl is part of the morphology of the shell in those gastropod mollusks that possess a coiled shell. The term is also sometimes used in a similar way to describe the shell of a cephalopod mollusk.
In gastropods
In gastropods, the b ...
is large and rounded. The umbilical region is white. The interior is greenish black, showing the external white markings. The thin, horny
operculum is multispiral.
Tryon (1887), Manual of Conchology IX – Solariidae (by William B. Marshall), Ianthinidae, Trichotropidae, Scalariidae, Cerithiidae, Rissoidae, Littorinidae
/ref>
Distribution
This marine species is endemic to Australia and occurs off South Australia, Tasmania and Victoria
References
* Crosse, H. 1870. ''Diagnoses Molluscorum novorum''. Journal de Conchyliologie 18: 301-304
* Crosse, H. 1871. ''Descriptions d'espèces nouvelles''. Journal de Conchyliologie 3 19: 319-325
* Tenison-Woods, J.E. 1876. ''Description of new Tasmanian shells''. Papers and Proceedings of the Royal Society of Tasmania 1875: 134-162
* Hutton, F.W. 1882. ''Note on Fossaria petterdi Brazier''. Proceedings of the Linnean Society of New South Wales 7: 66-67
* Hutton, F.W. 1884. ''Revision of the recent Rhipidoglossate and Docoglossate Mollusca of New Zealand''. Proceedings of the Linnean Society of New South Wales 9: 354-378
* Pritchard, G.B. & Gatliff, J.H. 1902. ''Catalogue of the marine shells of Victoria. Part V''. Proceedings of the Royal Society of Victoria 14(2): 85-138
* May, W.L. 1921. ''A Checklist of the Mollusca of Tasmania''. Hobart, Tasmania : Government Printer 114 pp
* May, W.L. 1923. ''An Illustrated Index of Tasmanian Shells''. Hobart : Government Printer 100 pp.
* Singleton, F.A. 1937. ''Lady Julia Percy Island. 1935 Expedition''. Mollusca. Proceedings of the Royal Society of Victoria 49: 387-396
* Cotton, B.C. 1959. ''South Australian Mollusca. Archaeogastropoda''. Handbook of the Flora and Fauna of South Australia. Adelaide : South Australian Government Printer 449 pp
*Wilson, B. 1993. ''Australian Marine Shells. Prosobranch Gastropods''. Kallaroo, Western Australia : Odyssey Publishing Vol. 1 408 pp.
External links
*
{{Commonscat
petterdi
Gastropods of Australia
Gastropods described in 1870