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Pinna (bivalve)

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Pinna
Temporal range: Carboniferous–Recent[1]
Pinna nobilis
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Bivalvia
Order: Pteriida
Superfamily: Pinnoidea
Family: Pinnidae
Genus: Pinna
Linnaeus, 1758
Type species
Pinna rudis Linnaeus, 1758
Synonyms
  • Exitopinna Iredale, 1939
  • Pinna (Abyssopinna) P. W. Schultz & M. Huber, 2013· accepted, alternate representation
  • Pinna (Cyrtopinna) Mörch, 1853· accepted, alternate representation
  • Pinna (Exitopinna) Iredale, 1939· accepted, alternate representation
  • Pinna (Pinna) Linnaeus, 1758· accepted, alternate representation
  • Pinna (Quantulopinna) Iredale, 1939· accepted, alternate representation
  • Pinna (Subitopinna) Iredale, 1939· accepted, alternate representation
  • Pinnarius Duméril, 1805
  • Pinnula Rafinesque, 1815
  • Quantulopinna Iredale, 1939
  • Subitopinna Iredale, 1939

Pinna is a genus of bivalve molluscs belonging to the family Pinnidae.[2][3] The type species of the genus is Pinna rudis.[2]

The most extensively studied species in the genus is P. nobilis, a Mediterranean pen shell which was historically important as the principal source of sea silk.

Description

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Pinna noblis shell & byssus.
Shell.

These pen shells can reach a length of about 80–90 cm (31–35 in). They are characterized by thin, elongated, wedge-shaped, and almost triangular shells with long, toothless edges. The surface of the shells shows radial ribs over their entire length.

Pinna is distinguished from its sibling genus Atrina by the presence of a sulcus dividing the nacreous region of the valves, and the positioning of the adductor scar on the dorsal side of shells.

These bivalves most commonly lie point-first on the sea bottom in which they live, anchored by a net of byssus threads.

Distribution

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Species in the genus Pinna are geographically widespread.[3] This genus is very ancient, going back up to the Carboniferous period. It is especially represented in Jurassic and Cretaceous fossils.[1]

Species

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According to the World Register of Marine Species, extant species in the genus Pinna are:[2]

The following species are only known from the fossil record:[2]

Nomen nudum

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  • Pinna inflata Röding, 1798
  • Pinna lubrica Lightfoot, 1786
  • Pinna nebulosa Lightfoot, 1786
  • Pinna nigricans Lightfoot, 1786
  • Pinna striata Röding, 1798
  • Pinna tenera Lightfoot, 1786
  • Pinna violacea Röding, 1798

Nomen dubium

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  • Pinna atrata Clessin, 1891
  • Pinna bullata Gmelin, 1791
  • Pinna marginata Lamarck, 1819
  • Pinna minax Hanley, 1858
  • Pinna rollei Clessin, 1891
  • Pinna rostellum Hanley, 1858
  • Pinna rotundata Linnaeus, 1758
  • Pinna sanguinea Gmelin, 1791
  • Pinna virgata Menke, 1843

Synonyms

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References

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  1. ^ a b "Pinna Linnaeus, 1758". Paleobiology Database. Retrieved 17 September 2024.
  2. ^ a b c d Bieler R, Bouchet P, Gofas S, Marshall B, Rosenberg G, La Perna R, Neubauer TA, Sartori AF, Schneider S, Vos C, ter Poorten JJ, Taylor J, Dijkstra H, Finn J, Bank R, Neubert E, Moretzsohn F, Faber M, Houart R, Picton B, Garcia-Alvarez O, eds. (2024). "Pinna Linnaeus, 1758". MolluscaBase. World Register of Marine Species. Retrieved 17 September 2024.
  3. ^ a b "Pinna Linnaeus, 1758". Global Biodiversity Information Facility. Retrieved 17 September 2024.
  4. ^ Shilekhin, L. E.; Mazaev, A. V.; Biakov, A. S. (2023). "The most ancient representatives of the genus Pinna (Bivalvia) in the Early Permian reef of Shakhtau (southern Cis-Urals, Russia)". Paleontological Journal. 57 (4): 21–25. doi:10.1134/S0031030123040111.
  • Frank H.T. Rodes, Herbert S. Zim en Paul R. Shaffer (1993) - Natuurgids Fossielen (het ontstaan, prepareren en rangschikken van fossielen), Zuidnederlandse Uitgeverij N.V., Aartselaar. ISBN D-1993-0001-361
  • Cyril Walker & David Ward (1993) - Fossielen: Sesam Natuur Handboeken, Bosch & Keuning, Baarn. ISBN 90-246-4924-2
  • Packard, Earl; Jones, David L. (Sep 1965). "Cretaceous Pelecypods of the Genus Pinna from the West Coast of North America". Journal of Paleontology. 39 (1): 910–915.
  • "Glossary". Man and Mollusc. Retrieved 2008-01-30.
  • Coan, E. V.; Valentich-Scott, P. (2012). Bivalve seashells of tropical West America. Marine bivalve mollusks from Baja California to northern Peru. 2 vols, 1258 pp.
  • Schultz, P. W.; Huber, M. (2013). Revision of the worldwide Recent Pinnidae and some remarks of fossil European Pinnidae. Acta Conchyliorum. 13: 1–164.
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