Unio disculus Lea, 1860
Lea, 1860. Proc. Acad. Nat. Sci. 12: 91.
Lea, 1863. Jour. Acad. Nat. Sci. 5 [O. 10]: 385 [21], pl. 44, fig. 293.
Type(s): HOLOTYPE USNM_85775, Uruguay R., S. Amercia.

Diplodon (Cyclomya s.s.) disculus — Simpson (1900), Simpson (1914)
Diplodon (Cyclomya) paranensis funebralis — Haas (1931)
Diplodon (Rhipidodonta) funebralis — Figueiras (1965)
Diplodon funebralis — Parodiz (1968), Mansur (1970)
Diplodon (Rhipidodonta) paranensis funebralis — Haas (1969)
Rhipidodonta funebralis — Simone (2006)

Unio funebralis Lea, 1860
Lea, 1860. Proc. Acad. Nat. Sci. 12: 91.
Lea, 1863. Jour. Acad. Nat. Sci. 5 [O. 10]: 378 [14], pl. 41, fig. 286.
Type(s): HOLOTYPE USNM_85777, Uruguay R., S. Amercia.

Diplodon (Cyclomya s.s.) funebralis — Simpson (1900), Simpson (1914)
Diplodon (Cyclomya) paranensis funebralis — Haas (1931)
Diplodon (Rhipidodonta) charruanus — Bonetto (1964), Bonetto (1965), Bonetto & Mansur (1970)
Diplodon (Rhipidodonta) funebralis — Figueiras (1965), Pereira et al. (2014)
Diplodon funebralis — Schade (1965), Parodiz (1968), Mansur (1970), Mansur et al. (2020), Graf & Cummings (2021)
Diplodon (Rhipidodonta) paranensis funebralis — Haas (1969)
Rhipidodonta funebralis — Simone (2006), Graf & Cummings (2007), Bogan (2010), Bieler (2021)

Unio nocturnis Lea, 1860
Lea, 1860. Proc. Acad. Nat. Sci. 12: 91.
(incorrect original spelling of Unio nocturnus Lea, 1860)

Rhipidodonta funebralis — Bieler (2021)

Unio nocturnus Lea, 1860
Lea, 1860. Proc. Acad. Nat. Sci. 12: 91 [as ‘nocturnis’].
Lea, 1863. Jour. Acad. Nat. Sci. 5 [O. 10]: 380 [16], pl. 42, fig. 288.
(correct name for Unio nocturnis Lea, 1860)
Type(s): HOLOTYPE USNM_85782, Uruguay R., S. Amercia.

Diplodon (Cyclomya s.s.) paranensis — Simpson (1900)
Diplodon (Cyclomya s.s.) nocturnus — Simpson (1914)
Diplodon (Cyclomya) paranensis — Ortmann (1921)
Diplodon (Cyclomya) paranensis funebralis — Haas (1931)
Diplodon (Rhipidodonta) charruanus — Bonetto (1964), Bonetto (1965), Bonetto & Mansur (1970)
Diplodon (Rhipidodonta) funebralis — Figueiras (1965)
Diplodon funebralis X paranensis — Parodiz (1968)
Diplodon (Rhipidodonta) paranensis funebralis — Haas (1969)
Rhipidodonta funebralis — Simone (2006), Bieler (2021)

Diplodon arcuatus Marshall, 1922
Marshall, 1922. Proc. U.S. Nat. Mus. 61(2437): 4, pl. 1, figs. 4, 6; pl. 2, figs. 7, 10; pl. 3, fig. 3.
Type(s): HOLOTYPE (ORIG. DESIG.) USNM_341376, Barra de Sacra, Paysandu, Uruguay.

Diplodon arcuatus — Marshall (1922)
Diplodon (Cyclomya) paranensis funebralis — Haas (1931)
Diplodon (Rhipidodonta) funebralis — Figueiras (1965)
Diplodon variabilis — Parodiz (1968)
Diplodon (Rhipidodonta) paranensis funebralis — Haas (1969)
Rhipidodonta funebralis — Simone (2006)