Synonyms: Cardium albanicum; Cardium albanum; Cardium antropovi; Cardium approbum; Cardium arbacti; Cardium argutum; Cardium atrocis; Cardium convexum (heterotypic); Cardium dahestanicum; Cardium dahestanicum var. parvulus; Cardium deformis; Cardium gratum (heterotypic); Cardium insperatum; Cardium iphiti; Cardium jucundum; Cardium jumudicum; Cardium kazancekense; Cardium kumli; Cardium kurendagense; Cardium latschinjani; Cardium lutarium; Cardium pacatum; Cardium retunsum; Cardium salvum; Cardium solitarium (heterotypic)