''Metaxia'' 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 minute
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 with right-handed shell-coiling,
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 ...
mollusk
Mollusca is a phylum of protostomic invertebrate animals, whose members are known as molluscs or mollusks (). Around 76,000 extant species of molluscs are recognized, making it the second-largest animal phylum after Arthropoda. The ...
s or
micromollusk
A micromollusc is a shelled mollusc which is extremely small, even at full adult size. The word is usually, but not exclusively, applied to marine molluscs, although in addition, numerous species of land snails and freshwater molluscs also ...
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 ...
Triphoridae
Triphoridae is a family of very small sea snails, marine gastropod molluscs in the informal group Ptenoglossa, within the clade Hypsogastropoda. Almost all the species in this family are micromollusks and almost all are left-handed in shell-c ...
, which are mostly left-handed in shell-coiling.
[Bouchet, P.; Gofas, S. (2011). Metaxia Monterosato, 1884. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=138572 on 2011-03-18]
Species
* ''
Metaxia abrupta'' (Watson, 1880)
* ''
Metaxia albicephala'' Kay, 1979
* ''
Metaxia bacillum'' (Issel, 1869)
* ''
Metaxia brunneopunctata''
Raines, 2024
* ''
Metaxia brunnicephala'' Kay, 1979
* ''
Metaxia carinapex'' Van der Linden, 1998
* ''
Metaxia convexa'' (Carpenter, 1856)
* ''
Metaxia diadema'' Bartsch, 1907
* ''
Metaxia discus''
M. Fernandes, 2024
* ''
Metaxia duplicarinata'' (Powell, 1940)
* ''
Metaxia elizabethclinghamae''
Bakker & Swinnen, 2021
* ''
Metaxia espinosai'' Rolán & Fernández-Garcés, 1992
* ''
Metaxia exaltata'' (Powell, 1930)
* ''
Metaxia excelsa'' Faber & Moolenbeek, 1991
* ''
Metaxia fuscoapicata'' Thiele, 1930
* ''
Metaxia gongyloskymnus'' Fernandes & Pimenta, 2011
* ''
Metaxia hapax'' Van der Linden, 1998
* ''
Metaxia incerta'' Fernandes & Rolán, 1988
* ''
Metaxia kermadecensis'' B.A. Marshall, 1977
* ''
Metaxia maoria'' (Finlay, 1930)
*''
Metaxia metaxa'' (delle Chiaje, 1828)
* ''
Metaxia polynesica'' Rehder, 1980
* ''
Metaxia prompta'' Rolán & Fernández-Garcés, 2008
* ''
Metaxia propinqua'' Rolán & Fernández-Garcés, 2008
* ''
Metaxia propria'' Rolán & Fernández-Garcés, 2008
* ''
Metaxia protolineata'' (Laseron, 1951)
* ''
Metaxia quadrata'' Faber, 2010
* † ''
Metaxia quadrilineata''
(Mayer-Eymar, 1900)
* ''
Metaxia rapaensis''
Cecalupo & Perugia, 2022
* ''
Metaxia rugulosa'' (C. B. Adams, 1850)
* ''
Metaxia solitaria'' B.A. Marshall, 1979
* ''
Metaxia taeniolata'' (Dall, 1889)
* ''
Metaxia tricarinata'' (Pease, 1861)
* ''
Metaxia vicina'' (C. B. Adams, 1850)
;Species brought into synonymy :
* ''Metaxia bacilla''
ic: synonym of ''Metaxia bacillum'' (Issel, 1869) (misspelling of ''Metaxia bacillum'' (Issel, 1869) )
* ''Metaxia exilis'' (C. B. Adams, 1850): synonym of ''Metaxia excelsa'' Faber & Moolenbeek, 1991
* ''Metaxia metaxae'' (delle Chiaje, 1828) : synonym of ''Metaxia metaxa'' (delle Chiaje, 1828)
References
* 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
* Bouchet P., Rocroi J.P., Hausdorf B., Kaim A., Kano Y., Nützel A., Parkhaev P., Schrödl M. & Strong E.E. (2017). Revised classification, nomenclator and typification of gastropod and monoplacophoran families. Malacologia. 61(1-2): 1-526; note: type species fixation under Art. 70.3
External links
Monterosato T. A. (di) (1884). Nomenclatura generica e specifica di alcune conchiglie mediterranee. Palermo, Virzi, 152 pp Dall W.H. 1889. Reports on the results of dredging, under the supervision of Alexander Agassiz, in the Gulf of Mexico (1877-78) and in the Caribbean Sea (1879-80), by the U.S. Coast Survey Steamer "Blake", Lieut.-Commander C.D. Sigsbee, U.S.N., and Commander J.R. Bartlett, U.S.N., commanding. XXIX. Report on the Mollusca. Part 2, Gastropoda and Scaphopoda. Bulletin of the Museum of Comparative Zoölogy at Harvard College, 18: 1-492, pls. 10-40Marshall B.A. (1977). The dextral triforid genus Metaxia in the south-west Pacific. New Zealand Journal of Zoology. 4(2): 111-117Bouchet, P. (1985). Les Triphoridae de Méditerranée et du proche Atlantique (Mollusca, Gastropoda). Lavori, Società Italiana di Malacologia. 21: 5-58
Triphoridae
{{Caenogastropoda-stub