''Fossarina'' 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 snails, 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 ...

Trochidae The Trochidae, common name top-snails or top-shells, are a family of various sized sea snails, marine gastropod molluscs in the subclass Vetigastropoda. This family is commonly known as the top-snails because in many species the shell resembles ...

, the top shells. MolluscaBase eds. (2020). MolluscaBase. Fossarina A. Adams & Angas, 1864. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=512292 on 2020-11-25 The genus ''Fossarina'' was moved from the family Fossariidae to the newly created subfamily

Fossarininae The Fossarininae are a taxonomic subfamily of very small to large sea snails, marine gastropod molluscs in the family Trochidae, common name In biology, a common name of a taxon or organism (also known as a vernacular name, English name, ...

within the family Trochidae by Williams et al. in 2010.Williams S. T., Donald K. M., Spencer H. G. & Nakano, T. (2010). "Molecular systematics of the marine gastropod families Trochidae and Calliostomatidae (Mollusca: Superfamily Trochoidea)". ''

Molecular Phylogenetics and Evolution ''Molecular Phylogenetics and Evolution'' is a peer-reviewed scientific journal of evolutionary biology and phylogenetics. The journal is edited by E.A. Zimmer. Indexing The journal is indexed in: * EMBiology *Journal Citation Reports *Scopus ...

'' 54(3): 783-809.

Description

The shell is auriform, a little depressed and narrowly umbilicated. The

spire A spire is a tall, slender, pointed structure on top of a roof of a building or tower, especially at the summit of church steeples. A spire may have a square, circular, or polygonal plan, with a roughly conical or pyramidal shape. Spire ...

is short. The oval

aperture In optics, the aperture of an optical system (including a system consisting of a single lens) is the hole or opening that primarily limits light propagated through the system. More specifically, the entrance pupil as the front side image o ...

is oblique. The

lip The lips are a horizontal pair of soft appendages attached to the jaws and are the most visible part of the mouth of many animals, including humans. Mammal lips are soft, movable and serve to facilitate the ingestion of food (e.g. sucklin ...

s are rounded. The operculum is multispiral.

Distribution

This marine genus occurs off

Australia Australia, officially the Commonwealth of Australia, is a country comprising mainland Australia, the mainland of the Australia (continent), Australian continent, the island of Tasmania and list of islands of Australia, numerous smaller isl ...

Tasmania Tasmania (; palawa kani: ''Lutruwita'') is an island States and territories of Australia, state of Australia. It is located to the south of the Mainland Australia, Australian mainland, and is separated from it by the Bass Strait. The sta ...

and

New Zealand New Zealand () is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and List of islands of New Zealand, over 600 smaller islands. It is the List of isla ...

; in the

East China Sea The East China Sea is a marginal sea of the Western Pacific Ocean, located directly offshore from East China. China names the body of water along its eastern coast as "East Sea" (, ) due to direction, the name of "East China Sea" is otherwise ...

Species

Species within the genus ''Fossarina'' include: * '' Fossarina legrandi'' Petterd, 1879 * '' Fossarina patula'' A. Adams & Angas, 1863 * '' Fossarina petterdi'' Crosse, 1870 * '' Fossarina picta'' A. Adams, 1867 * '' Fossarina reedi'' (Verco, 1907) * '' Fossarina rimata'' ( Hutton, 1884) The Indo-Pacific Molluscan Database also mentions the following species:OBIS ; Fossarina
/ref> * '' Fossarina mariei'' (P. Fischer, 1890) * '' Fossarina variegata'' (A. Adams, 1855) ;Species brought into synonymy: * ''Fossarina brazieri'' Angas, 1871: synonym of '' Fossarina patula'' A. Adams & Angas, 1863 * ''Fossarina funiculata'' Tenison-Woods, 1880: synonym of '' Fossarina patula'' A. Adams & Angas, 1863 * ''Fossarina hoffmeisteri'' Ladd, 1966: synonym of '' Calliotrochus marmoreus'' (Pease, 1861) * ''Fossarina mutabilis'' May W.L., 1909: synonym of '' Risellopsis mutabilis'' May, 1909 * ''Fossarina reedi'' (Verco, 1907): synonym of '' Minopa reedi'' (Verco, 1907) * ''Fossarina simpsoni'' Tenison-Woods, 1876: synonym of '' Fossarina petterdi'' Crosse, 1870

References

OBIS
* Suter, H., 1913. ''Manual of the New Zealand Mollusca''. Government Printer, Wellington. xxii 1210 p. * Cotton, B.C., 1959. ''South Australian Mollusca. Archaeogastropoda''. South Australian Government Printer, Adelaide. 1-449 * Iredale, T. & McMichael, D.F., 1962 1/Dec/1962 ''A reference list of the marine Mollusca of New South Wales''. Mem. Aust. Mus., 11:0-0. * Ladd, H.S., 1966 1/Dec/1966''Chitons and gastropods (Haliotidae through Adeorbidae) from the western Pacific Islands''. United States Geological Survey, Professional Pape, 531:0-0. {{Taxonbar, from=Q3503511 Trochidae Gastropod genera