''Tomellana'' 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 ...

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 ...

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 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 ...

Clavatulidae Clavatulidae is a Taxonomy (biology), taxonomic family (biology), family of sea snails, marine gastropod mollusks in the superfamily Conoidea. The family is not well differentiated morphologically. Clavatulidae was raised, based on cladistic an ...

.Bouchet, P. (2015). Tomellana. In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=578159 on 2016-04-13 ''Tomellana'' is a replacement name for ''Tomella'' Swainson, 1840, a junior homonym of ''Tomella'' Robineau-Desvoidy, 1830 (order

Diptera Flies are insects of the order Diptera, the name being derived from the Greek δι- ''di-'' "two", and πτερόν ''pteron'' "wing". Insects of this order use only a single pair of wings to fly, the hindwings having evolved into advance ...

)

Description

The smooth and shining shell has a fusiform shape. 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 ...

consists of 10 - 11

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 and is not much longer than the

body whorl The body whorl is part of the morphology (biology), morphology of the gastropod shell, 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 ...

. The first 1½ whorls are smooth and translucent. The width of the whorls increase slowly into becoming a bulging body whorl. The whorls are separated by a simple suture. The

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 oval. The inner

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 ...

shows a thick callosity at the top. The

siphonal canal The siphonal canal is an anatomical feature of the shells of certain groups of sea snails within the clade Neogastropoda. Some sea marine gastropods have a soft tubular anterior extension of the mantle called a siphon through which water i ...

is short and wide.Hermann Strebel, ''Bemerkungen zu den Clavatula-Gruppen Perrona und Tomella''; Hamburg :Kommissionsverlag von L. Gräfe & Sillem,1912.
/ref>

Species

* † '' Tomellana aueri'' Harzhauser, Landau & R. Janssen, 2022 * † '' Tomellana dulaii'' Harzhauser, Landau & R. Janssen, 2022 * ''

Tomellana hupferi ''Tomellana hupferi'' is a species of sea snail, a marine gastropod mollusk in the family Clavatulidae.Gofas, S. (2015). Tomellana hupferi. In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www.marinespecies.o ...

'' Strebel, 1912 * † '' Tomellana jouannetii'' (Des Moulins, 1842) * '' Tomellana leschkei'' (Strebel, 1912) * '' Tomellana lineata'' (Lamarck, 1818) * † '' Tomellana praecursor'' (Schaffer, 1912) * † ''

Tomellana semimarginata ''Tomellana semimarginata'' is an extinct species of sea snails, a marine gastropod mollusc in the family Clavatulidae. MolluscaBase eds. (2023). MolluscaBase. Tomellana semimarginata (Lamarck, 1822) †. Accessed through: World Register of Marine ...

'' (Lamarck, 1822) ;Species brought into synonymy: * ''Tomellana pfefferi'' (Strebel, 1912): synonym of '' Fusiturris pfefferi'' (Strebel, 1912)

References

* Wenz, W. (1938-1944). Gastropoda. Teil 1: Allgemeiner Teil und Prosobranchia. xii + 1639 pp. In: Schindewolf, O.H. (Ed.) Handbuch der Paläozoologie, Band 6. Bornträger, Berlin. Lief. 1, 1-240

External links

*
William Swainson. ''A Treatise on Malacology or Shells and Shellflsh'' 1840, pag.314; London, Longman. viii + 419 pp
*
Nolf F. (2015). ''The genus Tomellana (Mollusca: Gastropoda: Clavatulidae) in West Africa: a comprehensive Survey and establishment of Fusiturris kribiensis Bozzetti, 2015 as a junior synonym''. Neptunea. 13(4): 17-37

Bouchet, P.; Kantor, Y. I.; Sysoev, A.; Puillandre, N. (2011). A new operational classification of the Conoidea (Gastropoda). Journal of Molluscan Studies. 77(3): 273-308

Harzhauser, M.; Landau, B.; Janssen, R. (2022). The Clavatulidae (Gastropoda, Conoidea) of the Miocene Paratethys Sea with considerations on fossil and extant Clavatulidae genera. Zootaxa. 5123(1): 1-172
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