''Tiberia'' 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

parasitic Parasitism is a close relationship between species, where one organism, the parasite, lives (at least some of the time) on or inside another organism, the host, causing it some harm, and is adapted structurally to this way of life. The ent ...

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 ...

Pyramidellidae Pyramidellidae, common name the pyram family, or pyramid shells, is a voluminous taxonomic family of mostly small and minute ectoparasitic sea snails, marine heterobranch gastropod molluscs. The great majority of species of pyrams are micromol ...

, the pyrams and their allies. ''Tiberia'' is the only genus in the tribe Tiberiini.

Taxonomy

According to Schander, Van Aartsen & Corgan (1999) the subfamily Tiberiinae contains a single genus, ''Tiberia''. Tiberiinae was one of eleven recognised subfamilies in the family

according to the taxonomy of Ponder & Lindberg (1997). However, in the taxonomy of Bouchet & Rocroi (2005), this subfamily was downgraded to the rank of

tribe The term tribe is used in many different contexts to refer to a category of human social group. The predominant worldwide use of the term in English is in the discipline of anthropology. The definition is contested, in part due to conflict ...

Tiberiini in the subfamily Syrnolinae. ''Tiberia'' is the type genus of the tribe Tiberiini.

Description

The very small shells of the species in this genus have many

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). In nature File:Photograph and axial plane floral diagra ...

s. They are umbilicate shells that lack both shell sculpture and the apertural tooth or teeth that are characteristic in most other members of the family

. They may, however, have slight biplicate folds on the

columella Lucius Junius Moderatus Columella (, Arabic: ) was a prominent Roman writer on agriculture in the Roman Empire. His in twelve volumes has been completely preserved and forms an important source on Roman agriculture and ancient Roman cuisin ...

Species

Species in the genus ''Tiberia'' include: * '' Tiberia analoga'' van Aartsen & Corgan, 1996 * '' Tiberia apicifusca'' van Aartsen, Gittenberger & Goud, 1998 * '' Tiberia balteata'' (A. Adams, 1855) * '' Tiberia cathaysiae'' Saurin, 1959 * '' Tiberia grimaudi'' Saurin, 1959 * '' Tiberia hyalina'' (Dunker, 1860) * '' Tiberia minuscula'' (Monterosato, 1880) - synonym: ''Tiberia octaviana'' Di Geronimo, 1973 * '' Tiberia navella'' van Aartsen & Corgan, 1996 * '' Tiberia ngani'' Saurin, 1959 * '' Tiberia nitidula'' (A. Adams, 1860) * '' Tiberia ovata'' Saurin, 1959 * '' Tiberia paumotensis'' (Tryon, 1886) * '' Tiberia pusilla'' (A. Adams, 1854) * '' Tiberia semicostata'' Saurin, 1962 * '' Tiberia thaii'' Saurin, 1959 * '' Tiberia trifasciata'' (A. Adams, 1863) ;Species brought into synonymy: * ''Tiberia balteatus'' ic synonym of ''Tiberia balteata'' (A. Adams, 1855) * ''Tiberia dunkeri'' (Dall & Bartsch, 1906): synonym of '' Orinella dunkeri'' (Dall & Bartsch, 1906) * ''Tiberia gisela'' (Thiele, J., 1925): synonym of '' Exesilla gisela'' (Thiele, 1925) * ''Tiberia micalii'' i Penas & Rolan, 1997: synonym of '' Pyramidella dolabrata'' (Linnaeus, 1758) * ''Tiberia minusculoides'' (van Aartsen, Gittenberger & Goud, 1998):Gofas, S. (2010). ''Tiberia minusculoides'' (van Aartsen, Gittenberger & Goud, 1998). In: Bouchet, P.; Gofas, S.; Rosenberg, G. (2010) World Marine Mollusca database. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=141050 on 2011-03-21 synonym of '' Tiberia minuscula'' (Monterosato, 1880) * ''Tiberia nitidula'' Adams, A., 1860: synonym of '' Pyramidella dolabrata'' (Linnaeus, 1758) * ''Tiberia octaviana'' Di Geronimo, 1973: synonym of ''Tiberia minuscula'' (Monterosato, 1880) * ''Tiberia pretiosa'' Coen, 1933: synonym of '' Chrysallida interstincta'' (J. Adams, 1797): synonym of Parthenina interstincta (J. Adams, 1797) * ''Tiberia pulchella'' (A. Adams, 1854): synonym of '' Orinella pulchella'' (A. Adams, 1854)

References

* Vaught, K.C. (1989). ''A classification of the living Mollusca''. American Malacologists: Melbourne, FL (USA). . XII, 195 pp. * Rolán E., 2005. ''Malacological Fauna From The Cape Verde Archipelago''. Part 1, Polyplacophora and Gastropoda.

External links

Jeffreys J.G. 1884. ''On the Mollusca procured during the 'Lightning' and 'Porcupine' expeditions, 1868-70. (Part VIII).'' Proceedings of the Zoological Society of London, 1882: 341-372, pl. 26-28

Serge GOFAS, Ángel A. LUQUE, Joan Daniel OLIVER, José TEMPLADO & Alberto SERRA (2021) - The Mollusca of Galicia Bank (NE Atlantic Ocean); European Journal of Taxonomy 785: 1–114
{{Taxonbar, from=Q7800355 Pyramidellidae