| Arca Temporal range: Jurassic–Recent PreꞒ Ꞓ O S D C P T J K Pg N | |
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| Internal view of a valve of Arca zebra | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Bivalvia |
| Order: | Arcida |
| Family: | Arcidae |
| Genus: | Arca Linnaeus, 1758 |
| Species | |
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23 described species | |
Arca is a genus of edible saltwater clams in the family Arcidae, the Ark Clams.
Description
As is typical for ark clams, species in this genus have a long, straight hinge line. Some species in this genus, such as Arca zebra and Arca noae, have a brown-and-white striped pattern. Arca attach themselves to rock with byssal threads which protrude through a gap on the ventral (open) side.
Species
Species within the genus Arca include:
- Arca acuminata Krauss, 1848
- Arca angulata King & Broderip, 1832
- Arca avellana Lamarck, 1819 - hazelnut ark
- Arca boucardi Jousseaume, 1894 - Kobelt's ark
- Arca bouvieri Fischer, 1874
- Arca despecta Fischer, 1876
- Arca imbricata Bruguière, 1789 - mossy ark
- Arca kauaia (Dall, Bartsch & Rehder, 1938)
- Arca koumaci Lutaenko & Maestrati, 2007
- Arca maculata Sowerby
- Arca mauia
- Arca mutabilis (Sowerby I, 1833) - changeable ark
- Arca navicularis Bruguière, 1789 - Indo-pacific ark
- Arca noae Linnaeus, 1758 - Noah's ark
- Arca ocellata Reeve, 1844
- Arca pacifica (Sowerby I, 1833) - Panamic turkey wing
- Arca patriarchalis Röding, 1798
- Arca reticulata Gmelin, 1791
- Arca tetragona Poli, 1795 - four-sided ark
- Arca truncata Sowerby
- Arca turbatrix Oliver & Cosel, 1993
- Arca ventricosa Lamarck, 1819 - ventricose ark
- Arca volucris Reeve, 1844
- Arca zebra (Swainson, 1833) - Atlantic turkey wing
References
- Ruǎn Jīnshān; Li Xiùzhū; Lín Kèbīng; Luō Dōnglián; Zhōu Chén; Cài Qīnghǎi (阮金山;李秀珠;林克冰;罗冬莲;周宸;蔡清海), 安海湾南岸滩涂养殖贝类死亡原因调查分析 Archived 2020-07-17 at the Wayback Machine (Analysis of the causes of death of farmed shellfish on the mudflats in the southern part of Anhai Bay), 《福建水产》 (Fujian Aquaculture), 2005-04
- Serge Gofas (2011). "Arca Linnaeus, 1758". World Register of Marine Species. Retrieved April 9, 2011.
- JTMD (Japanese Tsunami Marine Debris) Database (2024). "Species Summary: Arca boucardi". Smithsonian Environmental Research Center. Retrieved June 2, 2024.
- JTMD (Japanese Tsunami Marine Debris) Database (2024). "Species Summary: Arca navicularis". Smithsonian Environmental Research Center. Retrieved June 2, 2024.
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