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 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), Chen et al. (2025), Wang et al. (2025), Dai et al. (2025), Campbell & Lydeard (2026)
Middendorffinaia shadini — Kantor et al. (2010), Zieritz et al. (2018)
Middendorffinaia dulkeitiana — Kantor et al. (2010)
Middendorffinaia weliczkowskii — Kantor et al. (2010)
Middendorffinaia ussuriensis — Kantor et al. (2010), He & Zhuang (2013)
Middendorffinaia sujfunensis — Kantor et al. (2010)
Middendorffinaia (s.s.) mongolica — Bogatov (2012), Vinarski & Kantor (2016), Bogatov & Prozorova (2017)
Middendorffinaia (s.s.) ussuriensis — Bogatov (2012), Vinarski & Kantor (2016), Bogatov & Prozorova (2017)
Middendorffinaia (s.s.) alimovi — Bogatov (2012), Vinarski & Kantor (2016), Bogatov & Prozorova (2017)
Unio crassus — IUCN (2014), Araujo et al. (2018)
Middendorffinaia (Pseudopotomida) weliczkowskii — Vinarski & Kantor (2016), Bogatov & Prozorova (2017)
Middendorffinaia (Pseudopotomida) dulkeitiana — Vinarski & Kantor (2016), Bogatov & Prozorova (2017)
Middendorffinaia (Pseudopotomida) shadini — Vinarski & Kantor (2016), Bogatov & Prozorova (2017)
Middendorffinaia (Pseudopotomida) sujfunensis — 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 suifunensis [sic] dulkeitiana — Bogatov (2022)
Middendorffinaia suifunensis [sic] shadini — Bogatov (2022)
Middendorffinaia suifunensis [sic] weliczkowskii — Bogatov (2022)
Middendorffinaia mongolica ussuriensis — Bogatov (2022)
Middendorffinaia suifunensis suifunensis [sic] — Bogatov (2022)
Middendorffinaia mongolica alimovi — Bogatov (2022)
Amur Basin and Primorye, eastern Russia. (East Asia: AS2)

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).
CIIMAR_BIV4676. (16S: MZ519047, 28S: MZ519284, COI: MZ512207, go to GenBank)