Bivalvia | Unionida | Unionoidea | Unionidae | Ambleminae | Quadrulini | Uniomerus
11 available nominal species synonyms (20 total synonyms)
Uniomerus tetralasmus — Graf & Cummings (2007), Tiemann et al. (2007), Williams et al. (2008), Watters et al. (2009), Bogan (2010), ... Chen et al. (2025), FMCS (2025), Cummings et al. (2025), Campbell & Lydeard (2026), Li et al. (2026)
Uniomerus declivis — Watters et al. (2009)
U. tetralasmus — Marshall et al. (2018)
Widespread in eastern North America, from Lake Erie south to the Gulf of Mexico and west to Colorado. (North America: NA2 NA4)


USNM_85354
New Orleans, La
topotype
Unio camptodon Say, 1832

USNM_85365
Jackson, Miss.
type
Unio jamesianus Lea, 1857

MCZ_169447
Chihuahua, 60 mi from Camp Ringgold, Mexico
lectotype
Unio manubius Gould, 1855

ANSP_42847
Jackson, Miss.
holotype
Unio porrectus Conrad, 1854

ANSP_42852
small creek in Greene Co., Ala.
type
Unio rivularis Conrad, 1853

USNM_85356
Scioto R., Ohio
paratype
Unio sayii Ward in Tappan, 1839

ANSP_41406
Canadian Fork, Arkansas River
holotype
Unio subcroceus Conrad, 1854

USNM_85604
Alexandria, La
type
Unio symmetricus Lea, 1845

USNM_85709
Chihuahua, 60 mi from Camp Ringgold, Mexico
paralectotype
Unio manubius Gould, 1855
UF_438436 (UtetBaP011). (COI: MH633653, ITS1, 5.8S: MH362659, ND1: MH633605, go to GenBank) USA, Mississippi, Hinds County, Tallahalla Creek at MP 29.69, about 8.6 km S of Raymond (32.18353, -90.40645).
UF_438303 (UtetCol005). (COI: MH633631, ITS1, 5.8S: MH362487, ND1: MH633583, go to GenBank) USA, Texas, Travis County, Unnamed tributary of Hams Branch at Cameron Road, trib of Wilbarger Creek (30.3652663, -97.619918).
JBFMC_8586_3. (16S: PQ238822, go to GenBank) USA: Texas, Red River.