Pisidium altile Prime, 1852
‘Anthony’ C.B. Adams, 1847. Cat. Gen. Sp. Adams: 29. [nomen nudum]
‘Anthony’ Prime, 1852. Boston J. Nat. Hist. 6(3): 353, pl. 11, figs. 10-12.
‘Anthony, in litt.’ Prime, 1865. Smithsonian Misc. Coll. (145): 65 [as ‘Cyclas altilis’]. [nomen nudum]

Pisidium (Cyclocalyx) compressum — Burch (1975)

Pisidium compressum Prime, 1852
Prime, 1852. Proc. Boston Soc. Nat. Hist. 4: 164.
Prime, 1852. Ann. Lyc. Natur. Hist. 5: 219, pl. 6.
Prime, 1852. Boston J. Nat. Hist. 6(3): 356, pl. 11, figs. 13-15.
Prime, 1865. Smithsonian Misc. Coll. (145): 64, figs. 67-68.

Corneocyclas (Cymatocyclas) compressum — Dall (1903)
Pisidium compressum — Thiele (1934), Herrington (1962), Mackie et al. (1980), Turgeon et al. (1998), Contreras-Arquieta (2000), Lee & Ó Foighil (2002), Schultheiß et al. (2008), Bogan (2010), ITIS (2012), Clewing et al. (2013), Ram et al. (2014), Saito et al. (2022)
Pisidium (Cyclocalyx) compressum — Clarke (1973), Burch (1975), Cooley & Ó Foighil (2000), Bespalaya et al. (2017), Fuentealba-Jara et al. (2017)
Pisidium (Euglesa) compressum — Korniushin & Glaubrecht (2002)
Cyclocalyx compressum — Lee & Ó Foighil (2003)
Euglesa (Cyclocalyx) compressa — Mouthon & Forcellini (2017)
Euglesa compressum — Vinarski et al. (2020)
Euglesa compressa — Príe et al. (2021), Czaja et al. (2023), Prié et al. (2023)
Euglesa (Casertiana) compressa — Bespalaya et al. (2023)

Pisidium peraltum Sterki, 1900
Sterki, 1900. Nautilus 14(1): ??.

Pisidium (Cyclocalyx) compressum — Burch (1975)

Pisidium compressum var. arrosum Sterki, 1905
Sterki, 1905. Nautilus 19(7): ??.
(intro'd as intra-sp. of Pisidium compressum Prime, 1852)

Pisidium (Cyclocalyx) compressum — Burch (1975)

Pisidium compressum var. conferum Sterki, 1905
Sterki, 1905. Nautilus 19(7): ??.
(intro'd as intra-sp. of Pisidium compressum Prime, 1852)

Pisidium (Cyclocalyx) compressum — Burch (1975)

Pisidium compressum var. contrarium Sterki, 1905
Sterki, 1905. Nautilus 19(7): ??.
(intro'd as intra-sp. of Pisidium compressum Prime, 1852)

Pisidium (Cyclocalyx) compressum — Burch (1975)

Pisidium compressum var. coosaense Sterki, 1905
Sterki, 1905. Nautilus 19(7): ??.
(intro'd as intra-sp. of Pisidium compressum Prime, 1852)

Pisidium (Cyclocalyx) compressum — Burch (1975)

Pisidium compressum var. laevigatum Sterki, 1905
Sterki, 1905. Nautilus 19(7): ??.
(intro'd as intra-sp. of Pisidium compressum Prime, 1852)

Pisidium (Cyclocalyx) compressum — Burch (1975)

Pisidium compressum var. limnicolum Sterki, 1905
Sterki, 1905. Nautilus 19(7): ??.
(intro'd as intra-sp. of Pisidium compressum Prime, 1852)

Pisidium (Cyclocalyx) compressum — Burch (1975)

Pisidium compressum var. opacum Sterki, 1905
Sterki, 1905. Nautilus 19(7): ??.
(intro'd as intra-sp. of Pisidium compressum Prime, 1852)

Pisidium (Cyclocalyx) compressum — Burch (1975)

Pisidium compressum var. rostratum Sterki, 1905
Sterki, 1905. Nautilus 19(7): ??.
(intro'd as intra-sp. of Pisidium compressum Prime, 1852)

Pisidium (Cyclocalyx) compressum — Burch (1975)

Pisidium compressum var. smithii Sterki, 1905
Sterki, 1905. Nautilus 19(7): ??.
(intro'd as intra-sp. of Pisidium compressum Prime, 1852)

Pisidium (Cyclocalyx) compressum — Burch (1975)

Pisidium fraudulentum Sterki, 1912
Sterki, 1912. Nautilus 26(8): 95.

Pisidium (Cyclocalyx) compressum — Burch (1975)

Pisidium compressum var. curvatum Sterki, 1916
Sterki, 1916. Ann. Carnegie Mus. 10(3/4): ??.
(intro'd as intra-sp. of Pisidium compressum Prime, 1852)

Pisidium (Cyclocalyx) compressum — Burch (1975)

Pisidium compressum var. illinoisense Sterki, 1916
Sterki, 1916. Ann. Carnegie Mus. 10(3/4): ??.
(intro'd as intra-sp. of Pisidium compressum Prime, 1852)

Pisidium (Cyclocalyx) compressum — Burch (1975)

Pisidium compressum var. pellucidum Sterki, 1916
Sterki, 1916. Ann. Carnegie Mus. 10(3/4): ??.
(intro'd as intra-sp. of Pisidium compressum Prime, 1852)

Pisidium (Cyclocalyx) compressum — Burch (1975)

Pisidium compressum mutatum Sterki, 1922
Sterki, 1922. Ann. Carnegie Mus. 13(3/4): ??.
(intro'd as intra-sp. of Pisidium compressum Prime, 1852)

Pisidium (Cyclocalyx) compressum — Burch (1975)

Pisidium coloradense Sterki, 1923
Sterki, 1923. Nautilus 37(1): ??.

Pisidium (Cyclocalyx) compressum — Burch (1975)