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Laevicardium

Egg cockle
Laevicardium oblongum (Cardium oblongum) - Finnish Museum of Natural History - DSC04691.JPG
A whole preserved specimen of Laevicardium oblongum
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Bivalvia
Order: Veneroida
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. They are unusual among the cockles in that they have smooth, rounded, "egg-like" valves.

There are 33 species in Laevicardium:



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Wikipedia

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