Bivalvia | ... | Unionoidea | Unionidae | Unioninae | Unionini | Unionina | Unio
11 available nominal species synonyms (19 total synonyms)
Unio crassus gontieri — Graf (2007), Lopes-Lima et al. (2017)
Crassiana musiva gontieri — Kantor et al. (2010)
Eolymnium colchicum — Kantor et al. (2010)
Crassiana mengrelica [sic] — Kantor et al. (2010)
Eolymnium raddei — Kantor et al. (2010)
Crassiana crassa sieversi — Kantor et al. (2010)
Unio stepanoffi — Kantor et al. (2010)
Eolymnium koutaisianum — Kantor et al. (2010)
Crassiana gregorii — Kantor et al. (2010)
Crassiana sobriewskii — Kantor et al. (2010)
Crassiana stevenianiformis — Kantor et al. (2010)
Unio crassus — IUCN (2014), Araujo et al. (2018)
Unio (Eolymnium) colchicus — Vinarski & Kantor (2016)
Unio (Crassiana) mengrelicus [sic] — Vinarski & Kantor (2016)
Unio (Eolymnium) raddei — Vinarski & Kantor (2016)
Unio (Eolymnium) byzantinus — Vinarski & Kantor (2016)
Unio (Crassiana) musivus — Vinarski & Kantor (2016)
Unio (Eolymnium) koutaisiana — Vinarski & Kantor (2016)
Unio (Crassiana) gregorii — Vinarski & Kantor (2016)
Unio (Crassiana) sobrievskii [sic] — Vinarski & Kantor (2016)
Unio (Crassiana) stevenianiformis — Vinarski & Kantor (2016)
Unio gontierii — Lopes-Lima et al. (2024), Hou et al. (2024), Campbell & Lydeard (2026)
Streams draining to the Black and Caspian Seas in Ukraine to Georgia. (North Eurasia: EU1)

There are no specimens for this species in the MUSSELpdb.
RMBH_biv_479_1. (COI: OR841920, go to GenBank) Bzyb River (Bzyb Basin), Georgia (43.187713, 40.291184).
RMBH_biv_479_3. (COI: OR841921, go to GenBank) ditto.
RMBH_biv_479_4. (COI: OR841922, go to GenBank) ditto.
RMBH_biv_479_5. (COI: OR841923, go to GenBank) ditto.
RMBH_biv_479_6. (COI: OR841924, go to GenBank) ditto.
CIIMAR_BIV1534. (COI: OR841925, mtGenome: OR912550, SRA: SRX22628947, go to GenBank) Inkiti (Bzyb Basin), Georgia (43.179089, 40.319573).
CIIMAR_BIV1535. (COI: OR841926, go to GenBank) ditto.
RMBH_biv_239_1. (COI: OR841927, go to GenBank) Rioni River (Rioni Basin), Georgia (42.223328, 42.695068).
RMBH_biv_239_10. (COI: OR841928, go to GenBank) ditto.
RMBH_biv_239_11. (COI: OR841929, go to GenBank) ditto.
RMBH_biv_239_12. (COI: OR841930, go to GenBank) ditto.
RMBH_biv_239_2. (COI: OR841931, go to GenBank) ditto.
RMBH_biv_239_5. (COI: OR841932, go to GenBank) ditto.
RMBH_biv_239_6. (COI: OR841933, go to GenBank) ditto.
RMBH_biv_239_7. (COI: OR841934, go to GenBank) ditto.
RMBH_biv_239_8. (COI: OR841935, go to GenBank) ditto.
RMBH_biv_239_9. (COI: OR841936, go to GenBank) ditto.
RMBH_biv_1263_1. (COI: PQ584841, go to GenBank)
RMBH_biv_1263_10. (COI: PQ584850, go to GenBank)
RMBH_biv_1263_11. (COI: PQ584851, go to GenBank)
RMBH_biv_1263_12. (COI: PQ584852, go to GenBank)
RMBH_biv_1263_2. (COI: PQ584842, go to GenBank)
RMBH_biv_1263_3. (COI: PQ584843, go to GenBank)
RMBH_biv_1263_4. (COI: PQ584844, go to GenBank)
RMBH_biv_1263_5. (COI: PQ584845, go to GenBank)
RMBH_biv_1263_6. (COI: PQ584846, go to GenBank)
RMBH_biv_1263_7. (COI: PQ584847, go to GenBank)
RMBH_biv_1263_8. (COI: PQ584848, go to GenBank)
RMBH_biv_1263_9. (COI: PQ584849, go to GenBank)
RMBH_biv_1452_1. (COI: PQ584853, go to GenBank)
RMBH_biv_1452_10. (COI: PQ584862, go to GenBank)
RMBH_biv_1452_11. (COI: PQ584863, go to GenBank)
RMBH_biv_1452_12. (COI: PQ584864, go to GenBank)
RMBH_biv_1452_13. (COI: PQ584865, go to GenBank)
RMBH_biv_1452_14. (COI: PQ584866, go to GenBank)
RMBH_biv_1452_15. (COI: PQ584867, go to GenBank)
RMBH_biv_1452_16. (COI: PQ584868, go to GenBank)
RMBH_biv_1452_17. (COI: PQ584869, go to GenBank)
RMBH_biv_1452_18. (COI: PQ584870, go to GenBank)
RMBH_biv_1452_19. (COI: PQ584871, go to GenBank)
RMBH_biv_1452_2. (COI: PQ584854, go to GenBank)
RMBH_biv_1452_20. (COI: PQ584872, go to GenBank)
RMBH_biv_1452_3. (COI: PQ584855, go to GenBank)
RMBH_biv_1452_4. (COI: PQ584856, go to GenBank)
RMBH_biv_1452_5. (COI: PQ584857, go to GenBank)
RMBH_biv_1452_6. (COI: PQ584858, go to GenBank)
RMBH_biv_1452_7. (COI: PQ584859, go to GenBank)