Mactridae

Mactridae
Temporal range: Cretaceous to Present
Shell of Spisula solida
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Bivalvia
Order: Veneroida
Family: Mactridae
Lamarck, 1809
Genera

See text

Mactridae, common name the trough shells or duck clams, is a family of saltwater clams, marine bivalve mollusks in the order Veneroida.

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.[2]

Genera

Genera within the family Mactridae include:[3]

References

  1. Barrett, J. H. and C. M. Yonge, 1958. Collins Pocket Guide to the Sea Shore. P. 156. Collins, London
  2. Barrett, J. H. and C. M. Yonge, 1958. Collins Pocket Guide to the Sea Shore. P. 156. Collins, London
  3. http://www.marinespecies.org/aphia.php?p=taxdetails&id=230
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