Taxa Count: 11
CARDIIDAE
Americardia "myra"
Cardiidae indet.
Cardium Linnaeus, 1758
Cardium whitei (Dall, 1901)
Clinocardium (Clinocardium) nuttallii (Conrad, 1837)
Dallocardia quadragenarium (Conrad, 1837)
Pachycardium
Pachycardium coronaense (Packard, 1922)
Protocardia
Protocardia (Pachycardium) placerensis (Gabb, 1864)
Protocardia Beyrich, 1845