TrachycardiumTrachycardium is a genus of molluscs in the family Cardiidae.Fossil recordsThis genus is known in the fossil records from the Cretaceous to the Quaternary. Fossils are found in the marine strata throughout the world.SpeciesSpecies within this genus include: Trachycardium belcheri Trachycardium consors Trachycardium egmontianum — Florida prickly cockle Trachycardium isocardia — West Indian prickly cockle Trachycardium muricatum — yellow cockle Trachycardium procerum — Slender cockle Trachycardium rossi Marwick, 1944