Corbula caspia Eichwald, 1829
Eichwald, 1829. Zool. Spec. Rossiae 1: 281, pl. 5, fig. 6.

Monodacna caspia — Lamy (1946), Slugina (2006), Huber (2010), WoRMS (2011), Wesselingh et al. (2019)
Monodacna edentula var. caspia — Zhadin (1965)
Hypanis caspia caspia — Kantor et al. (2010)
Adacna (Monodacna) caspia caspia — Vinarski & Kantor (2016)

Cardium pseudocardium Deshayes, 1838
Deshayes, 1838. Mém. Soc. Géol. France 3: 59, pl. 1, figs. 1-2.

Monodacna pseudocardium — Lamy (1946), Huber (2010)
Monodacna pontica — Zhadin (1965)
Adacna pontica — Kantor et al. (2010)

Monodacna pontica Eichwald, 1838
Eichwald, 1838. Bull. Soc. imp. Nat. Moscou 11: 168.

Monodacna pseudocardium — Lamy (1946)
Monodacna pontica — Zhadin (1965)
Adacna (Monodacna) pontica — Starobogatov et al. (2004)
Hypanis (Monodacna) pontica — Munasypova-Motyash (2006)
Monodacna portica [sic] — Bogan (2010)
Adacna pontica — Kantor et al. (2010)
Monodacna caspia — WoRMS (2011)
Monodacna colorata — Wesselingh et al. (2019)

Cardium hiantulum Agassiz, 1842
Agassiz, 1842. Études Moll. Fossil. 2: 47, pl. 1, figs. 24-29.

Monodacna caspia — Lamy (1946)

Hypanis caspia knipowitschi Logvinenko & Starobogatov, 1966
Logvinenko & Starobogatov, 1966. Biol. Nauki 2: 15, fig. 2.

Hypanis caspia knipowitschi — Kantor et al. (2010)
Monodacna knipowitschi — WoRMS (2011), Wesselingh et al. (2019)
Adacna (Monodacna) caspia knipowitschi — Vinarski & Kantor (2016)

Hypanis caspia filatovae Logvinenko & Starobogatov, 1967
Logvinenko & Starobogatov, 1967. Geol. Geomorph. Hydrbiol. Coastal Zone: 231.

Hypanis caspia filatovae — Kantor et al. (2010)
Monodacna filatovae — WoRMS (2011), Wesselingh et al. (2019)
Adacna (Monodacna) caspia filatovae — Vinarski & Kantor (2016)

Hypanis grossui Scarlato & Starobogatov, 1972
Scarlato & Starobogatov, 1972. Fauna Black & Azov Seas 3: 214, pl. 4, figs. 1a-b.

Adacna (Monodacna) grossui — Starobogatov et al. (2004), Vinarski & Kantor (2016)
Hypanis (Monodacna) caspia grossui — Munasypova-Motyash (2006)
Adacna grossui — Kantor et al. (2010)
Monodacna colorata — Wesselingh et al. (2019)

Hypanis caspia assalae Tadjalli-Pour, 1977
Tadjalli-Pour, 1977. unknown publication: 99, pl. 1, fig. 4.

Monodacna caspia — Wesselingh et al. (2019)

Hypanis caspia nahali Tadjalli-Pour, 1977
Tadjalli-Pour, 1977. unknown publication: 99, pl. 1, fig. 6.

Monodacna caspia — Wesselingh et al. (2019)

Cardium caspium Grimm, 1876
Grimm, 1876. unknown publication: ??.

Hypanis caspia filatovae — Kantor et al. (2010)
Adacna (Monodacna) caspia filatovae — Vinarski & Kantor (2016)
Monodacna filatovae — Wesselingh et al. (2019)

Monodacna portica Bogan, 2010
Bogan, 2010. FADA: [web].