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Mactra

Mactra is a large genus of medium-sized marine bivalve mollusks or clams, commonly known as trough shells or duck clams. Mactra is the type genus within the family Mactridae.

The word "trough" in the common name refers to the fact that all Mactra shells have a large ligamental pit at the hinge line, which in life contains a large internal ligament. Most bivalves in other families have an external ligament instead.

Species

Species brought into synonymy:
  • Mactra acutissima <small>Cosel, 1995</small>: synonym of Scissodesma acutissima <small>(Cosel, 1995)</small>
  • Mactra angolensis <small>Cosel, 1995</small>: synonym of Scissodesma angolensis <small>(Cosel, 1995)</small>
  • Mactra discors <small>Gray, 1873</small>: synonym of Spisula discors <small>(Gray, 1837)</small>
  • Mactra inconstans <small>Cosel, 1995</small>: synonym of Huberimactra inconstans <small>(Cosel, 1995)</small>
  • Mactra micronitida <small>Cosel, 1995</small>: synonym of Scissodesma micronitida <small>(Cosel, 1995)</small>
  • Mactra murchisoni <small>Deshayes, 1854</small> : synonym of Spisula murchisoni <small>(Reeve, 1854)</small>
  • Mactra nitida <small>Spengler, 1786</small>: synonym of Scissodesma nitida <small>(Gmelin, 1791)</small>
  • Mactra ordinaria <small>(E.A.Smith, 1898)</small> : synonym of Maorimactra ordinaria <small>(E. A. Smith, 1898)</small>
  • Mactra ovata <small>Wood 1828</small> : synonym of Paphies australis <small>(Gmelin, 1791)</small>
  • Mactra rostrata <small>Spengler, 1802</small>: synonym of Barymactra rostrata <small>(Spengler, 1802)</small>
  • Mactra silicula <small>Reeve, 1854</small>: synonym of Mactrotoma compressa <small>(Spengler, 1802)</small>
  • Mactra tristis <small>(Reeve, 1854)</small>: synonym of Cyclomactra tristis <small>(Reeve, 1854)</small>
  • Mactra vitrea <small>Gray, 1837</small>: synonym of Huberimactra grayi <small>(M. Huber, 2015)</small>

References