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Data last updated
Mon 1 Dec 2025
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Bivalvia
| Unionoida
| Unionoidea
| Unionidae
| Ambleminae
| Popenaiadini
| Nephronaias
species Nephronaias caldwellii (Lea, 1858): specimens2 available nominal species synonyms
Recent Taxonomic Opinions
Barynaias caldwellii — Graf & Cummings (2007), Bogan (2010), Graf & Cummings (2021)
Nephronaias caldwellii — Cummings et al. (2025)
Range
Widely distributed in Pacific drainages from Mexico, Guatemala, and Nicaragua to Panama.
Map of Georeferenced Specimens
MUSSELp Specimen Records
Guatemala
Nicaragua
Panama
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FMNH_73370
Bayano River, above Chepo, Panama Prov., Panama
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FMNH_110180
Bayano River, El Llano, Panama Prov., Panama
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USNM_536560
Bayano River, near Acanti, Panama
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USNM_536560
Bayano River, near Acanti, Panama
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ANSP_161833
Bayano River, Pintupo, Darien, Rep. Panama
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FMNH_63537
Bayano River, Pintupo, Darrien, Panama
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UMMZ_107957
Chimaugua River, Isthmus of Darien, Panama
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MCZ_293266
Chucunaque River, Isthmus of Darien, Panama
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USNM_84385
Chumnagua R., Isth. of Darien
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USNM_84385
Chumnagua R., Isth. of Darien
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AMNH_179584
Darien, Canal Zone, Panama
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USNM_513600
Isla de Coiba, Panama
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USNM_84396
Isthmus of Darien
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USNM_84396
Isthmus of Darien
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NCSM_6243
North America, Golfo de San miguel asin/ Rio Chucunaque/ Rio Membrillo Panama, Darién, Rio Membrillo (Rio Chucunaque-Rio Turia drainage), ca 5km, upstream Siani
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USNM_424421
Republic of Panama
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ANSP_243690
Rio Banayo at El Llano, 15 mi fr. Chepo, Republic of Panama
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ANSP_162482
Rio Bayano just below El Llano, Panama
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USNM_361760
Rio Chucunaque, above Rio Chiati, Panama
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USNM_361760
Rio Chucunaque, above Rio Chiati, Panama
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INHS_21691
Rio Membrillo, ca. 5 km upstream Sinai, Darien, Panama
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AMS_140904
Rio Turia, Boca de Cupe, Darien Prov., Panama
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unknown
Genbank Vouchers
There are no georeferenced Genbank vouchers for this species in the MUSSELpdb.
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