Laevicardium

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.

Species
There are 33 species in Laevicardium:
 * Laevicardium attenuatum
 * Laevicardium biradiatum
 * Laevicardium brasilianum
 * Laevicardium castaneum
 * Laevicardium clarionense
 * Laevicardium compressum
 * Laevicardium crassum (Gmelin, 1791) &mdash; Norwegian egg cockle
 * Laevicardium decorticatum
 * Laevicardium elatum (Sowerby, 1833) &mdash; Giant egg cockle
 * Laevicardium eliodelfabroi Cossignani, 2024
 * Laevicardium etheringtoni
 * Laevicardium gorgasi
 * Laevicardium laevigatum (Linnaeus, 1758) &mdash; egg cockle
 * Laevicardium leptorimum
 * Laevicardium lobulatum
 * Laevicardium lyratum
 * Laevicardium mortoni (Conrad, 1830) &mdash; Morton's egg cockle
 * Laevicardium multipunctatum
 * Laevicardium nemo
 * Laevicardium nemocardiforme
 * Laevicardium oblongum
 * Laevicardium parisiense
 * Laevicardium parkinsoni
 * Laevicardium pedernalense
 * Laevicardium pictum (Ravenel, 1861) &mdash; Ravenel's egg cockle
 * Laevicardium pristis
 * Laevicardium rudentis
 * Laevicardium serratum
 * Laevicardium substriatum
 * Laevicardium sybariticum (Dall, 1886) &mdash; Dall's egg cockle
 * Laevicardium tegalense
 * Laevicardium tenuisulcatum
 * Laevicardium tertium
 * Laevicardium tristiculum
 * Laevicardium venustulum