Laevicardium

Laevicardium
A whole preserved specimen of Laevicardium oblongum
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Bivalvia
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.

Species

There are 33 species in Laevicardium: ^[2]

• Laevicardium attenuatum
• Laevicardium biradiatum
• Laevicardium brasilianum
• Laevicardium castaneum
• Laevicardium clarionense
• Laevicardium compressum
• Laevicardium crassum (Gmelin, 1791)— Norwegian egg cockle
• Laevicardium decorticatum
• Laevicardium elatum (Sowerby, 1833)— Giant egg cockle
• Laevicardium eliodelfabroi Cossignani, 2024
• Laevicardium etheringtoni
• Laevicardium gorgasi
• Laevicardium laevigatum (Linnaeus, 1758)— egg cockle
• Laevicardium leptorimum
• Laevicardium lobulatum
• Laevicardium lyratum
• Laevicardium mortoni (Conrad, 1830)— Morton's egg cockle
• Laevicardium multipunctatum
• Laevicardium nemo
• Laevicardium nemocardiforme
• Laevicardium oblongum
• Laevicardium parisiense
• Laevicardium parkinsoni
• Laevicardium pedernalense
• Laevicardium pictum (Ravenel, 1861)— Ravenel's egg cockle
• Laevicardium pristis
• Laevicardium rudentis
• Laevicardium serratum
• Laevicardium substriatum
• Laevicardium sybariticum (Dall, 1886)— Dall's egg cockle
• Laevicardium tegalense
• Laevicardium tenuisulcatum
• Laevicardium tertium
• Laevicardium tristiculum
• Laevicardium venustulum

References

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". Global Biodiversity Information Facility . Retrieved 2015-02-28.