Cardium (Replidacna) nevesskajae A. A. Ali-Zade & Rybina, 1974 † accepted as Plicatiformes fittoni (A. d'Orbigny, 1845) † (source of synonymy)
Cardium (Replidacna) speciosum A. A. Ali-Zade & Rybina, 1974 † accepted as Replidacna suessi (Barbot de Marny, 1869) † (source of synonymy)
Cardium (Replidacna) tumidum A. A. Ali-Zade & Rybina, 1974 † accepted as Obsoletiformes pseudofischerianus vasoevitshi (V. P. Kolesnikov, 1929) † (source of synonymy)
Cerastoderma (Obsoletiforma) lucinoides Paramonova, 1977 † accepted as Obsoletiformes lucinoides (Paramonova, 1977) † (original description)
Replidacna alpocensis Jekelius, 1944 † accepted as Replidacna politioanei (Jekelius, 1944) † (source of synonymy)
Replidacna aureliana Jekelius, 1944 † accepted as Replidacna wiesenensis (A. Papp, 1954) † (source of synonymy)
Replidacna azerbaidjanica A. A. Ali-Zade & Rybina, 1969 † accepted as Obsoletiformes obsoletus (Eichwald, 1830) † (source of synonymy)
Replidacna carasi Jekelius, 1944 † accepted as Replidacna politioanei (Jekelius, 1944) † (source of synonymy)
Replidacna covarasi Jekelius, 1944 † accepted as Replidacna politioanei (Jekelius, 1944) † (source of synonymy)
Replidacna levicostata Jekelius, 1944 † accepted as Obsoletiformes obsoletus (Eichwald, 1830) † (source of synonymy)
Replidacna soceni Jekelius, 1944 † accepted as Obsoletiformes obsoletus (Eichwald, 1830) † (source of synonymy)
Replidacna tibisii Jekelius, 1944 † accepted as Replidacna politioanei (Jekelius, 1944) † (source of synonymy)