Bivalvia | ... | Unionoidea | Unionidae | Ambleminae | Pleurobemini | Plethobasus cyphyus

Frierson, 1911. Nautilus 25(5): 53, pl. 3, middle & lower figs.
Type(s): LECTOTYPE UMMZ_80525 (by R.I. Johnson, 1972: 142), Holston River, Tennessee.
+ Plethobasus cyphyus (Rafinesque, 1820) — Watters et al., 2009: 218.
+ Plethobasus cyphyus (Rafinesque, 1820) — Williams et al., 2008: 499.
+ Plethobasus cyphyus (Rafinesque, 1820) — Parmalee & Bogan, 1998: 175.
+ Plethobasus cyphyus (Rafinesque, 1820) — R.I. Johnson, 1980: 90.
= Plethobasus compertus (Frierson, 1911) — Haas, 1969: 251.
= Pleurobema (Plethobasus) compertum (Frierson, 1911) — Frierson, 1927: 46, sp. 204.
= Plethobasus cyphyus compertus (Frierson) — Ortmann, 1924: 43.
= Plethobasus cyphyus compertus (Frierson, 1911) — Ortmann, 1918: 544.
= Pleurobema (sec. Plethobasus) compertum (Frierson, 1911) — Simpson, 1914: 809.