Unionoida | Unionoidea | Unionidae | Gonideinae | Gonideini | Ptychorhynchus murinum nominal species Unio douglasiae subpressus Heude, 1885
Heude, 1885, Conch. Fluv. Nanking (9): pl. 65-65bis.
(intro'd as intra-sp. of Unio douglasiae Griffith & Pidgeon, 1833; new name for Unio compressus Heude, 1877)
= Ptychorhynchus murinum Taxonomic Opinions
+ Ptychorhynchus murinum (Heude, 1883) — He & Zhuang, 2013
+ Nodularia douglasiae (Griffith et Pidgeon, 1843) — Prozorova et al., 2005
+ Unio douglasiae Gray in Griffith & Pidgeon, 1834 — Liu et al., 1979
= Unio douglasiae var. subpressus Heude — Heude, 1885
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