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Laevicardium oblongum (Cardium oblongum) - Finnish Museum of Natural History - DSC04691.JPG
A whole preserved specimen of Laevicardium oblongum
Scientific classification e
Kingdom: Animalia
Phylum: Mollusca
Class: Bivalvia
Subclass: Heterodonta
Order: Cardiida
Family: Cardiidae
Genus: Laevicardium
Swainson, 1840

Laevicardium, common name "egg cockles", is a genus of saltwater clams or cockles, marine bivalve molluscs in the family Cardiidae, the cockles.[1] They are unusual among the cockles in that they have smooth, rounded, "egg-like" valves.


There are 33 species in Laevicardium:[2]


  1. ^ Abbott, R.T. & Morris, P.A. A Field Guide to Shells: Atlantic and Gulf Coasts and the West Indies. New York: Houghton Mifflin, 1995. 58-59.
  2. ^ "Laevicardium Swainson, 1840". Species. GBIF. Retrieved 2015-02-28.