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Page last updated
Thu 3 September 2025

The Freshwater Mussels (Unionoida) of the World (and other less consequential bivalves)

FM(U)otW(aolcb) is the web version of the MUSSEL Project Database. Follow the links to browse the data or use the custom Google search field. Either way, you win!

Search the database pages:

Bivalvia | ... | Unionoidea | Unionidae | Unioninae | Anodontini | Anodontina | Brachyanodon

species Brachyanodon californiensis (Lea, 1852): specimens
     4 available nominal species synonyms (5 total synonyms)

Recent Taxonomic Opinions

Anodonta californiensisGraf & Cummings (2007), Chong et al. (2008), Bogan (2010), Cummings & Graf (2010), IUCN (2011), ... MolluscaBase (2024), Galal-Khallaf et al. (2024), FMCS (2025), Cummings et al. (2025), Wu et al. (2026)
Anodonta dejectaGraf & Cummings (2007), Chong et al. (2008), Bogan (2010), Cummings & Graf (2010), ITIS (2012), Mock et al. (2013)
Pyganodon grandisWilliams et al. (2008)
Pyganodon grandis grandisWatters et al. (2009)
Anodonta nuttallianaIUCN (2016)
Brachyanodon californiensisCampbell & Lydeard (2026)

Range

California and east to the Great Basin, USA, south into Mexico.

Map of Georeferenced Specimens

species map


Mexico

specimen
USNM_894268

Casas Grandes River, Zaragoza, at road crossing (Ford) to school

specimen
USNM_894268

Casas Grandes River, Zaragoza, at road crossing (Ford) to school

specimen
USNM_631878

Mexico, Chihuahua, Colonia Juarez, Rio Pedras Verdes

specimen
USNM_86376

Pilotada, Chihuahua, Mexico

specimen
USNM_86400

Pilotada, Chihuahua, Mexico

specimen
USNM_86400

Pilotada, Chihuahua, Mexico

specimen
FMNH_55049

Rio Piedras Verdes, near Colonia, Juarez, Chihuahua, Mexico

specimen
USNM_892842

Rio Sirupa, upstream from Madera Road bridge, Chihuahua, Mexico

specimen
USNM_1152159

Rio Sirupa, upstream from Madera Road bridge, Station L80-92

TMYERS_009. Laguna El Fresnal, Guzman Basin, Chihuahua, Mexico


USA

specimen
USNM_30721

Arkansas River ?

specimen
MCZ_187290

Boundary Survey - Texas

specimen
USNM_86393

Colo. R., Calif.

specimen
USNM_130171

Colorado R., Mexican Boundary, Station 204

specimen
USNM_130451

Salt Creek, W side of Colorado Desert, near Mexico line, USA. 100 Ft Below Sea Level.

specimen
USNM_130173

San Bernadino Ranch Boundary line between Arizona & Mexico

specimen
USNM_130173

San Bernadino Ranch Boundary line between Arizona & Mexico

specimen
USNM_610313

San Bernadino Ranch, Arizona, boundary between Ariz. and Mexico

specimen
USNM_610313

San Bernadino Ranch, Arizona, boundary between Ariz. and Mexico

specimen
USNM_610313

San Bernadino Ranch, Arizona, boundary between Ariz. and Mexico

specimen
USNM_892838

United States: Arizona; Apache County; East Fork Black River, in side channel, 1.8 mi upstream from Buffalo crossing junction. T5N, R28E, Sec. 36

specimen
USNM_892843

United States: Arizona; Apache County; West Fork Black River, Road 25 crossing. T4N R28E, Sec 11.

specimen
USNM_892841

United States: Arizona; Apache County; West Fork Black River, Road 25 crossing. T4N R28E, Sec 11.

specimen
USNM_130170

United States: Arizona: near San Bernadino Ranch

MCZ_247226. (near Fort Clark) Rancho San Bernardino, Mexican Boundary line, Arizona

MCZ_79763. Above Dos Palmas, Colorado Desert, California

USNM_272304. Babocomari River at Huachuca Siding, Arizona 31.636145, -110.490272

MCZ_161905. Colo. R., Calif.

USNM_7072. Colorado Desert near Carriso Creek “Colorado Desert, Teriary Strat 'A Drift, Near Carriso Creek”

USNM_128802. Colorado Desert, on Mexico- California boundary between Salton River and New River at Monument 219

USNM_128801. Colorado River, at mouth

UMMZ_64081. Floor of Colorado Desert, Riverside Co., California

USNM_519291. Imperial Valley, Colorado Desert, Indio, California

ANSP_94250. Imperial Valley, Colorado Desert, Indio, California

USNM_128812. New River (Colorado Desert) at Laguna Station, San Diego Co., California.

USNM_128817. New River (Colorado Desert) at Laguna Station, San Diego Co., California.

ANSP_112129. Old mill dam near Tu…

UMMZ_103244. Rancho San Bernardino, Mexican Boundary line

UMMZ_300635. Rancho San Bernardino, Mexican Boundary line

USNM_129973. San Bernardino Ranch, Arizona

ANSP_112128. Santa Cruz River, above Congress St. bridge, Pima Co., Arizona, USA

LACM_1980.95.1. United States: Arizona; Apache County; Three Forks, W tributary of East Fork Black River

USNM_894305. United States: Arizona; Gila County; Black River, Black River crossing

LACM_1968.258.1. United States: Arizona; Gila County; Black River, Black River crossing

LACM_1967.201.1. United States: Arizona; Gila County; Black River, Tick Flats

LACM_1968.257.1. United States: Arizona; Navajo County; Black River, Military Crossing

LACM_126304. United States: California; Imperial County; New River, Calexico

Georeferenced Genbank Vouchers


USA

Mp_2668_Acal_ABR. (COI: EU327356, go to Genbank) Black River, Arizona.