Mactra

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Mactra
Temporal range: Eocene–Recent
File:Mactra corallina.jpg
Mactra stultorum
Scientific classification
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Mactra

Linnaeus, 1767
Species

See text.

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Mactra is a 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

References

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