Bivalvia | ... | Unionoidea | Unionidae | Ambleminae | Lampsilini | Ptychobranchus subspatulatus
Meek & Hayden, 1857. Proc. Acad. Nat. Sci. 9: 146.
= Ptychobranchus subspatulatus (Meek & Hayden, 1857) — Modell, 1957: 192.
= Unio subspatulatus Meek & Hayden — Henderson, 1935: 81.