Agnocardia R. B. Stewart, 1930 † (taxonomy source)
Cardium philippi Ihering, 1897 † accepted as
Hedecardium (Iheringicardium) philippi (Ihering, 1897) † (new combination reference)
Cardium septuagenarium Tate, 1887 † accepted as
Cardium moniletectum Tate, 1887 † accepted as
Hedecardium moniletectum (Tate, 1887) † (source of synonymy)
Cardium verrucosum Deshayes, 1829 † accepted as
Freneixicardia verrucosa (Deshayes, 1829) † (new combination reference)
Freneixicardia J. A. Schneider, 2002 (original description)
Hedecardium Marwick, 1944 † (status source)
Hedecardium (Iheringicardium) J. A. Schneider, 2002 † (original description)
Hedecardium pseudomagnum (F. McCoy, 1877) † (new combination reference)
Loxocardium Cossmann, 1886 † (taxonomy source)
Orthocardiinae J. A. Schneider, 2002 (original description)
Orthocardium Tremlett, 1950 † (basis of record)