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.[1]

Mactra
Temporal range: Eocene–Present
Mactra stultorum
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Bivalvia
Order: Venerida
Superfamily: Mactroidea
Family: Mactridae
Genus: Mactra
Linnaeus, 1767
Species

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Synonyms
  • Colorimactra Iredale, 1929
  • Deikea Mayer-Eymar, 1872
  • Mactra (Mactra) Linnaeus, 1767· accepted, alternate representation
  • Mactra (Maorimactra) Finlay, 1928· accepted, alternate representation
  • Mactra (Nannomactra) Iredale, 1930· accepted, alternate representation
  • Nannomactra Iredale, 1930
  • Telemactra Iredale, 1929
  • Trigonella da Costa, 1778

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

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Mactra glauca
Species brought into synonymy

References

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  1. ^ MolluscaBase eds. (2021). MolluscaBase. Mactra Linnaeus, 1767. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=138158 on 2021-06-03
  • "Mactra". Integrated Taxonomic Information System.