Didacna (Crassadacna) Eberzin, 1962 † accepted as Pontalmyra Stefanescu, 1896 † (original description)
Didacna (Pontalmyra) Stefanescu, 1896 † accepted as Pontalmyra Stefanescu, 1896 † (basis of record)
Didacna (Pontalmyra) cismontana Eberzin, 1962 † accepted as Pontalmyra cismontana (Eberzin, 1962) † (original description)
Didacna (Pontalmyra) georgiana Eberzin, 1962 † accepted as Pontalmyra georgiana (Eberzin, 1962) † (original description)
Didacna (Pontalmyra) kubanica Eberzin, 1962 † accepted as Pontalmyra kubanica (Eberzin, 1962) † (original description)
Didacna (Pontalmyra) occidentalis Eberzin, 1962 † accepted as Pontalmyra occidentalis (Eberzin, 1962) † (original description)
Didacna (Pontalmyra) praecrenulata Eberzin, 1962 † accepted as Pontalmyra praecrenulata (Eberzin, 1962) † (original description)
Didacna (Pontalmyra) praekarpinskyi Eberzin, 1962 † accepted as Pontalmyra karpinskyi (Andrusov, 1910) † (original description)
Didacna (Pontalmyra) transcaspica Eberzin, 1962 † accepted as Pontalmyra transcaspica (Eberzin, 1962) † (original description)
Didacna atschistskalensis Gabuniya, 1953 † accepted as Pontalmyra subcrenulata (Andrusov, 1910) † (source of synonymy)
Didacna crassatellata var. epicatephes Gabuniya, 1953 † accepted as Pontalmyra crassatellata trigona (Andrusov, 1910) † (source of synonymy)
Didacna submedeae Gabuniya, 1953 † accepted as Pontalmyra multistriata (Rousseau, 1842) † (source of synonymy)
Didacna suboxypleura Gabuniya, 1953 † accepted as Pontalmyra oxypleura (Davitashvili, 1930) † (source of synonymy)