''Teretia cincta'' is an extinct

species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...

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

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 ...

mollusk 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 e ...

in the

family Family (from la, familia) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its ...

Raphitomidae Raphitomidae is a family of small to medium-sized sea snails, marine gastropod mollusks in the superfamily Conoidea.Bouchet P. & Rocroi J.-P. (Ed.) (2005). "Classification and nomenclator of gastropod families". ''Malacologia'' 47(1-2). . 39 ...

.MolluscaBase eds. (2020). MolluscaBase. Teretia cincta (Seguenza, 1880) †. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=832501 on 2020-02-25

Description

The length of the shell attains 10.6 mm, its diameter 5 mm. (Original description in Italian) This species is very similar to ''

Teretia anceps ''Teretia anceps'' is an extinct species of sea snail, a marine gastropod mollusk in the family Raphitomidae. Description The length of the shell reaches 11.5 mm, its diameter 4 mm. Distribution Fossils of this marine species were found in Up ...

'', but it must be distinguished by a less delicate shape, because the

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). Whorls in nature File:Photograph and axial plane floral ...

s are shorter and therefore relatively wider. The cinguli are thinner and more protruding. The interstices are much wider. Seguenza, G. (1880) ''Le formazioni terziarie nella provincia di Reggio (Calabria)''. Memorie della Classe di Scienze Fisiche Matematiche e Naturali della Regia Accademia del Lincei, serie 3 (6), 1–445
/ref>

Distribution

Fossils of this marine species were found in

Pliocene The Pliocene ( ; also Pleiocene) is the epoch in the geologic time scale that extends from 5.333 million to 2.58Calabria , population_note = , population_blank1_title = , population_blank1 = , demographics_type1 = , demographics1_footnotes = , demographics1_title1 = , demographics1_info1 = , demographics1_title2 ...

Italy Italy ( it, Italia ), officially the Italian Republic, ) or the Republic of Italy, is a country in Southern Europe. It is located in the middle of the Mediterranean Sea, and its territory largely coincides with the homonymous geographical re ...

References

* Brunetti, M.; Vecchi, G. (2003). Sul ritrovamento di Teretia elengatissima (Foresti, 1868) in terreni pliocenici dell'Emilia e della Toscana. Bollettino della Società Paleontologica Italiana. 42: 49-57

External links

Morassi M. & Bonfitto A. (2015). ''New Indo-Pacific species of the genus Teretia Norman, 1888 (Gastropoda: Raphitomidae).'' Zootaxa. 3911(4): 560-570
* {{DEFAULTSORT:Teretia Cincta

cincta Cincta is an extinct class of echinoderms that lived only in the Middle Cambrian epoch. Homostelea is a junior synonym. The classification of cinctans is controversial, but they are probably part of the echinoderm stem group. Cinctans were sessi ...

Gastropods described in 1880