Bivalvia | ... | Unionoidea | Unionidae | Unioninae | Unionini | Middendorffinaiina | Middendorffinaia
10 available nominal species synonyms (12 total synonyms)
Unio crassus mongolicus — Graf (2007)
Inversidens pantoensis — Graf (2007), He & Zhuang (2013)
Middendorffinaia dulkeitiana — Kantor et al. (2010)
Middendorffinaia mongolica — Kantor et al. (2010), Zieritz et al. (2018), Klishko et al. (2019), Lopes-Lima et al. (2020), Bolotov et al. (2020), ... Hou et al. (2025), Hou et al. (2025), Chen et al. (2025), Wang et al. (2025), Dai et al. (2025)
Middendorffinaia shadini — Kantor et al. (2010), Zieritz et al. (2018)
Middendorffinaia sujfunensis — Kantor et al. (2010)
Middendorffinaia ussuriensis — Kantor et al. (2010), He & Zhuang (2013)
Middendorffinaia weliczkowskii — Kantor et al. (2010)
Middendorffinaia (s.s.) alimovi — Bogatov (2012), Vinarski & Kantor (2016), Bogatov & Prozorova (2017)
Middendorffinaia (s.s.) mongolica — Bogatov (2012), Vinarski & Kantor (2016), Bogatov & Prozorova (2017)
Middendorffinaia (s.s.) ussuriensis — Bogatov (2012), Vinarski & Kantor (2016), Bogatov & Prozorova (2017)
Unio crassus — IUCN (2014), Araujo et al. (2018)
Middendorffinaia (Pseudopotomida) shadini — Vinarski & Kantor (2016), Bogatov & Prozorova (2017)
Middendorffinaia (Pseudopotomida) dulkeitiana — Vinarski & Kantor (2016), Bogatov & Prozorova (2017)
Middendorffinaia (Pseudopotomida) sujfunensis — Vinarski & Kantor (2016), Bogatov & Prozorova (2017)
Middendorffinaia (Pseudopotomida) weliczkowskii — Vinarski & Kantor (2016), Bogatov & Prozorova (2017)
Middendorffinaia (Pseudopotomida) maihensis — Bogatov & Prozorova (2017)
Nodularia douglasiae — Lopes-Lima et al. (2020), Bolotov et al. (2020)
Middendorffinaia mongolica mongolica — Bogatov (2022)
Middendorffinaia mongolica ussuriensis — Bogatov (2022)
Middendorffinaia mongolica alimovi — Bogatov (2022)
Middendorffinaia suifunensis suifunensis [sic] — Bogatov (2022)
Middendorffinaia suifunensis [sic] weliczkowskii — Bogatov (2022)
Middendorffinaia suifunensis [sic] shadini — Bogatov (2022)
Middendorffinaia suifunensis [sic] dulkeitiana — Bogatov (2022)
Amur Basin and Primorye, eastern Russia.

There are no specimens for this species in the MUSSELpdb.
SXNU_23031702 (HL02). (COI: PQ268311, go to Genbank) Yijimi River, Tieli City, Heilongjiang Province, China.
SXNU_23031703 (HL03). (COI: PQ268312, go to Genbank) ditto.
SXNU_23031705 (HL05). (COI: PQ268313, go to Genbank) ditto.
SXNU_23031706 (HL06). (COI: PQ268314, go to Genbank) ditto.
SXNU_23031712 (HL12). (COI: PQ268315, go to Genbank) ditto.
RMBH_biv_229_2. (16S: MK574413, 28S: MK574554, COI: MH974548, go to Genbank) Russia: Far East, Primorye Region, Gladkaya River (42.7065°N, 130.9084°E), Japan Sea drainage.
RMBH_biv_229_5. (16S: MK574414, 28S: MK574555, COI: MH974549, go to Genbank) ditto.
RMBH_biv_229_7. (16S: MK574415, 28S: MK574556, COI: MH974550, go to Genbank) ditto.
RMBH_biv_99_11. (16S: MK574418, 28S: MK574559, COI: MK574279, go to Genbank) Russia: Far East, Primorye Region, Komarovka River (43.6392°N, 132.1614°E), Razdolnaya Basin, Japan Sea drainage.
RMBH_biv_99_8. (COI: MK574278, go to Genbank) ditto.
RMBH_IEPN_99_3. (16S: MK574416, 28S: MK574557, COI: MH974551, go to Genbank) ditto.
RMBH_IEPN_99_7. (16S: MK574417, 28S: MK574558, COI: MK574277, go to Genbank) ditto.
Mp_4189_428 (H2). (COI: MW139311, go to Genbank) Russian Far East, Primorye Territory, Arsenievka River (Amur River basin),.
Mp_4189_430 (H1). (COI: MW139310, go to Genbank) ditto.
Mp_4189_431 (H3). (COI: MW139312, go to Genbank) Russian Far East, Primorye Territory, Gladkaya River.
CIIMAR_BIV1870. (COI: MH974547, go to Genbank) Shilka river, Transbaikalya, Russia (53.1048, 119.2202).