''Perrona'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

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 ...

s, 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 ...

s 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 ...

Clavatulidae Clavatulidae is a taxonomic family of sea snails, marine gastropod mollusks in the superfamily Conoidea. The family is not well differentiated morphologically. Clavatulidae was raised, based on cladistic analysis, from subfamily to the family ...

Description

In this genus 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. Spires are ...

is carinated or smooth. The

whorls 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 ...

are not tubercular or spinose. The anal sinus can be found more or less near the suture.

Species

Species within the genus ''Perrona'' include: * '' Perrona aculeiformis'' (Lamarck, 1816) * † '' Perrona anwari'' Abbass H., 1977 * † '' Perrona czarnockii'' Bałuk, 2003 * † '' Perrona descendens'' (Hilber, 1879) * † '' Perrona estebbunensis'' Vera-Peláez & Lozano-Francisco, 2001 * † '' Perrona harzhauseri'' Kovács & Vicián, 2021 * † '' Perrona heinmoorensis'' Kautsky, 1925 * † '' Perrona inedita'' (Bellardi, 1877) * ''

Perrona jessica ''Perrona jessica'' is a species of sea snail, a marine gastropod mollusk in the family Clavatulidae. Description The length of the shell attains 28 mm, its diameter 9 mm. (Original description) The shell is acuminately fusiform, shi ...

'' Melvill, 1923 (taxon inquirendum) * † '' Perrona letkesensis'' (Csepreghy-Meznerics, 1953) * '' Perrona micro'' Rolan, Ryall & Horro, 2008 * † '' Perrona munizsolisi'' Vera-Peláez & Lozano-Francisco, 2001 * † '' Perrona nemethi'' Kovács & Vicián, 2021 * † '' Perrona obeliscoides'' (Millet, 1854) * '' Perrona obesa'' (Reeve, 1842) * '' Perrona perron'' (Gmelin, 1791) * '' Perrona quinteni'' (Nolf & Verstraeten, 2006) * † '' Perrona robustocarinifera'' Landau, Harzhauser, İslamoğlu & Silva, 2013 * † '' Perrona secunda'' Lozouet, 2017 * † '' Perrona semimarginata'' (Lamarck, 1822) (fossils from deposits in the

Miocene The Miocene ( ) is the first geological epoch of the Neogene Period and extends from about (Ma). The Miocene was named by Scottish geologist Charles Lyell; the name comes from the Greek words (', "less") and (', "new") and means "less recen ...

, Burdigalian, Graves near Bordeaux, France) M. Glibert (1954), Pleurotomes du Miocène; Institut Royal des Sciences Naturelles de Belgique; Mémoires N" 129 * † '' Perrona servata'' (Sacco, 1890) * '' Perrona spirata'' (Lamarck, 1816) * '' Perrona subspirata'' (Martens, 1902) * † '' Perrona taurinensis'' (Bellardi, 1877) * † '' Perrona villarrasensis'' Vera-Peláez & Lozano-Francisco, 2001 ;Species brought into synonymy: * ''Perrona lineata'' (Lamarck, 1816): synonym of '' Tomellana lineata'' (Lamarck, 1818) * ''Perrona tritonum'' Schumacher, 1817: synonym of ''Perrona perron'' (Gmelin, 1791) Perrona semimarginata 01

References

External links

Schumacher, C. F. (1817). Essai d'un nouveau système des habitations des vers testacés. Schultz, Copenghagen. iv + 288 pp., 22 pls

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
{{Taxonbar, from=Q2711301 Gastropod genera