†suborder Cardiocerina (ammonite)
Parent taxon: Ammonitida according to A. A. Shevyrev 2006
Sister taxa: Ammonites, Ammonitina, Ancyloceratina, Ancylocerina, Haploceratina, Olcostephanina, Perisphinctina, Protancyloceratina, Psilocerina, Stephanocerina
Subtaxa: none
Ecology: fast-moving nektonic carnivore
Distribution: there are no occurrences of Cardiocerina in the database