nominal species Unio compressus Heude, 1877
 Heude, 1877, Conch. Fluv. Nanking (3): pl. 24, fig. 52.
(homonym of Unio compressus Sowerby, 1829; renamed Unio douglasiae subpressus Heude, 1885; renamed Ptychorhynchus incertus Simpson, 1900)
Type(s): SYNTYPE MNHN_MP_3388, Ngan Noue, Chine.
= Ptychorhynchus murinum Taxonomic Opinions
+ Ptychorhynchus murinum (Heude, 1883) — (He & Zhuang, 2013)
+ Ptychorhynchus murinum (Heude, 1883) — (Haas, 1969)
+ Ptychorhynchus murinum (Heude, 1883) — (Haas, 1924)
+ Ptychorhynchus murinum (Heude, 1883) — (Simpson, 1914)
+ Ptychorhynchus murinus (Heude, 1883) — (Simpson, 1900)
+ Unio douglasiae var. subpressus Heude — (Heude, 1885)
= Unio compressus Heude — (Heude, 1877)
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