Bivalvia | ... | Hyrioidea | Hyriidae | Hyriinae | Rhipidodontini | Diplodon gratus

Lea, 1865. Proc. Acad. Nat. Sci. 17: 76.
Lea, 1868. Jour. Acad. Nat. Sci. 6 [O. 12]: 282, pl. 39, fig. 96.
Type(s): HOLOTYPE USNM_84101, [no locality available - South America].
= Diplodon rufofuscus (Lea, 1865) — Miyahira et al., 2019: 24.
+ Diplodon rotundus gratus (Lea, 1860) — Mansur, 1970: 67.
+ Diplodon (Rhipidodonta) fontainianus (d’Orbigny, 1835) — Haas, 1969: 529.
+ Diplodon rotundus gratus (Lea, 1860) — Parodiz, 1968: 10.
+ Diplodon (s.s.) granosus multistriatus (Lea, 1831) — Bonetto, 1964: 324.
+ Diplodon (Cyclomya) fontainianus (d’Orbigny, 1835) — Haas, 1931: 37.
= Diplodon (s.s.) rufofuscus (Lea, 1865) — Simpson, 1914: 1254.
= Diplodon (s.s.) rufofuscus (Lea, 1865) — Simpson, 1900: 880.
= Margaron (Unio) rufofuscus (Lea) — Lea, 1870: 31.