Mactridae, common name the trough shells or duck clams, is a family of saltwater clams, marine bivalve mollusks in the order Venerida.
Description
These clams have two short siphons, each with a horny sheath. The shell is shaped like a rounded-cornered equilateral triangle and there is a slight gape at the posterior. Each valve bears two cardinal teeth with four lateral teeth on the right valve and two on the left. The foot is white and wedge-shaped. They mostly inhabit the neritic zone.[1]
Ecology
Trough shells burrow in sand or fine gravel and never in muddy substrates.[1]
Genera
According to the World Register of Marine Species (2012), this family contains 37 genera:[2]
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Anatina Schumacher, 1817[3]
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Austromactra Iredale, 1930
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Barymactra Cossmann in Cossmann & Peyrot, 1909
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Coelomactra Dall, 1895
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Crassula Marwick, 1948
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Cyclomactra Dall, 1895[4]
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Darina Gray, 1853
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Diaphoromactra Iredale, 1930
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Eastonia Gray, 1853
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Harvella Gray, 1853
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Heterocardia Deshayes, 1855
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Huberimactra Cosel & Gofas, 2018
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Leptospisula Dall, 1895
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Lutraria Lamarck, 1799[3]
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Mactra Linnaeus, 1767[3]
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Mactrellona Marks, 1915[3]
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Mactrinula Gray, 1853[5]
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Mactromeris Conrad, 1868[3]
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Mactrotoma Dall, 1894[3]
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Maorimactra Finlay, 1928
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Meropesta Iredale, 1929
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Mulinia Gray, 1837[3]
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Oxyperas Mörch, 1853
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Pseudocardium Gabb, 1866
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Raeta Gray, 1853[3]
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Rangia Desmoulins, 1832[3]
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Resania Gray, 1853
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Scalpomactra Finlay [in Marwick], 1928
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Scissodesma Gray, 1837
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Simomactra Dall, 1894[3]
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Spisula Gray, 1837[3]
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Standella Gray, 1853
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Tanysiphon Benson, 1858
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Tresus Gray, 1853[3]
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Trinitasia Maury, 1928
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Tumbeziconcha Pilsbry & Olsson, 1935
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Zenatia Gray, 1853
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Zenatina Gill & Darragh, 1963
References
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^ a b Barrett, J. H.; Yonge, C. M. (1958). Collins Pocket Guide to the Sea Shore. London (UK): Collins. p. 156.
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^ Bouchet, Philippe (2012-03-23). "Mactride Lamarck, 1809". WoRMS. World Register of Marine Species. Retrieved 2017-01-25.
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^ a b c d e f g h i j k l Scott, Paul V. "Mactridae". Integrated Taxonomic Information System.
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^ Kong, Lingfeng; Li, Qi; Qiu, Zhaoxing (2007). "Genetic and morphological differentiation in the clam Coelomactra antiquata (Bivalvia: Veneroida) along the coast of China". Journal of Experimental Marine Biology and Ecology. 343: 110–117. doi:10.1016/j.jembe.2006.12.003.
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^ Coan, E. V.; Valentich-Scott, P. (2012). Bivalve seashells of tropical West America. Marine bivalve mollusks from Baja California to northern Peru. pp. 2 vols, 1258 pp.
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