MUSSELpdb

Introduction

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Taxonomy

all genera

Unionidae

Margaritiferidae

Hyriidae

Etheriidae

Mycetopodidae

Iridinidae

Species & Genus Richness by
Taxonomy

Geography

Summary

North America

Central America

South America

Afrotropics

North Eurasia

East Asia

Australasia

Species Richness & Endemism by
Geography

Data last updated
Mon 1 Dec 2025

Bivalvia | Unionoida | Unionoidea | Unionidae | Ambleminae | Quadrulini | Uniomerus

species Uniomerus declivis (Say, 1831): specimens

3 available nominal species synonyms (6 total synonyms)

Recent Taxonomic Opinions

Uniomerus declivis — Graf & Cummings (2007), Campbell et al. (2008), Watters et al. (2009), Bogan (2010), Cummings & Graf (2010), ... Graf & Cummings (2021), FMCS (2021), Neemuchwala et al. (2023), Hopper et al. (2023), FMCS (2025)
Uniomerus tetralasmus — Williams et al. (2008), IUCN (2012), Williams et al. (2014)
Uniomerus excultus — ITIS (2012)
Uniomerus declivus [sic] — Inoue et al. (2018), Burlakova et al. (2019)
U. declivis — Marshall et al. (2018)

Range

Gulf Coastal Plain from Alabama west to Texas, including the lower Mississippi.

Map of Georeferenced Specimens

MUSSELp Specimen Records

USA

Genbank Vouchers

Georeferenced Genbank Vouchers

USA

UAUC_3290. (16S: AY655081, COI: AY613846, ITS1: DQ383435, ND1: JF326450, go to Genbank) Big Sunflower River, Farrell Rd. Bridge, ~ 5 mi N of Clarksdale, Coahoma Co. MS.

JBFMC_8586_2. (16S: PQ238821, SRA: SRR17818393, go to Genbank) USA: Texas, Red River.

UF_438312. (16S: MK001792, 28S: MK001826, 5.8S: KT285703, COI: KT285659, ITS1: KT285703, go to Genbank) USA:Texas:Newton County:Sabine River; Datum (WGS84) UTM 15R 0436930; 33926622; found in woody debris on right bank of river (30.665006, -93.658356).