| Page last updatedWed 1 October 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! 
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 Bivalvia | Unionoida | Unionoidea | Unionidae | Ambleminae | Lampsilini | Mesonaias species Mesonaias tampicoensis (Lea, 1838): specimens6 available nominal species synonyms (9 total synonyms)
 Recent Taxonomic OpinionsCyrtonaias tampicoensis — Graf & Cummings (2007), Chapman et al. (2008), Campbell et al. (2008), Chapman et al. (2008), Bogan (2010), ... FMCS (2021), Czaja et al. (2023), Hopper et al. (2023), Freeman et al. (2025), FMCS (2025)Actinonaias ligamentina ligamentina — Watters et al. (2009)
 Cyrtonaias tampicoensis tampicoensis — ITIS (2012)
 Mesonaias tampicoensis — Cummings et al. (2025)
 RangePánuco and Papaloapán basins, Mexico Map of Georeferenced Specimens
 Honduras
 Mexico|  OSUM_28272
 “River Tampico, Mexico”
 |  NCSM_5806
 El Tempoal, El Higo, Veracruz, Mexico
 |  AMNH_31034
 Mexico
 |  |  AMS_126904
 Mexico
 |  BMNH_1907-10-28-268
 Mexico
 |  CM_61.2007
 Mexico
 |  |  NCSM_MFM_1358
 Mexico
 |  CM_61.766
 Mexico, Tamaulipas, Tampico
 |  SMF_12416
 Rio Casas Viejas, 25 m n.v. Valles, Mexiko
 |  |  FMNH_67943
 Rio Casas Viejas, between Valles and Pujol, Mexico
 |  INHS_21707
 Rio Casas Viejas, N of Valles, San Luis Potosi, Mexico
 |  INHS_21707
 Rio Casas Viejas, N of Valles, San Luis Potosi, Mexico
 |  |  INHS_21708
 Rio Casas Viejas, N of Valles, San Luis Potosi, Mexico
 |  INHS_21709
 Rio Casas Viejas, N of Valles, San Luis Potosi, Mexico
 |  INHS_21709
 Rio Casas Viejas, N of Valles, San Luis Potosi, Mexico
 |  |  MNHN_MP_1298
 Rio Cosamaloapan, Vera Cruz, Mexique
 |  AMS_10232
 Rio Guayalejo, 19 mi ENE Ciudad Monte, Tamaulipas, Mexico
 |  NCSM_MFM_19084
 Rio Jaltepec, Jesus Carranza, Veracruz, Mexico
 |  |  BMNH_MP_423
 Rio Nopalapa, Mexico
 |  OSUM_46822
 Rio Panuco [25 mi. WSW of Tampico]
 |  INHS_89442
 Rio Pánuco, 18 km WSW of Panuco, 55 km SW of Tampico [Oviedo], Tamaulipas, Mexico
 |  |  INHS_21710
 Rio Panuco, Pujal, San Luis Potosi, Mexico
 |  FMNH_11642
 Rio Papaloapan, El Hule, Veracruz, Mexico
 |  INHS_89430
 Rio Purificacion, 27-28 km NE of Victoria, 235 km SW of Matamoros, Presa Vicente Guerrero, Tamaulipas, Mexico
 |  |  UMMZ_31844
 Rio San Juan, Mexico
 |  UMMZ_34890
 Rio San Juan, nr Haciendo de Cuatotolapam, Mexico
 |  NCSM_5812
 Rio Tamesi, Hwy. 80, @16 km W Magiscatzin, Tamaulipas, Mexico
 |  |  INHS_89438
 Rio Tampaón [22 km SSW of Ciudad Valles, 38 km S of Tamuin, 132 km WSW of Tampico], San Luis Potosi, Mexico
 |  OSUM_46821
 Rio Tempoal, [off Mexican Route 105, 50 mi. SW of Tampico]
 |  INHS_89422
 Rio Tempoal, Tempoal, Veracruz, Mexico
 |  |  UF_215326
 river, 14 km E Xilitla, San Luis Potosi, Mexico, 21° 26’ 13” N, 98° 56’ 00” W
 |  USNM_1282329-30
 San Luis Potosi, Rio Moctezuma at Tanquian de Escobedo
 |  USNM_1282331-35
 Tamaulipas, Rio Guayalejo at Rt. Mex. 80 near Mexcoltzin. ca. 17.9 roadmiles E of Ciudad Mante (measured from circle in southern Mante where the Tampico, Mante, and Valles roads diverge)
 |  |  USNM_1282331-35
 Tamaulipas, Rio Guayalejo at Rt. Mex. 80 near Mexcoltzin. ca. 17.9 roadmiles E of Ciudad Mante (measured from circle in southern Mante where the Tampico, Mante, and Valles roads diverge)
 |  ZMB_MP_0479
 Tampico
 |  BMNH_1874-12-11-2
 Tampico and Tecamate, Mexico
 |  |  AMNH_29201
 Tampico River
 |  SMF_12418
 Tampico, Mexico
 |  USNM_84843
 Tampico, Mexico
 |  |  USNM_84843
 Tampico, Mexico
 |  USNM_85338
 Tecomate River, near Tlacotalpan, [Vera Cruz State], Mexico.
 |  USNM_85338
 Tecomate River, near Tlacotalpan, [Vera Cruz State], Mexico.
 |  |  ANSP_129940
 Tecomate River, near Tlacotalpan, Mexico
 |  SMF_12419
 Veracruz, Mexico
 |  USNM_1282338
 Veracruz, Rio Papaloapan off road from Ciudad Aleman to Tuxtepec; ca. 0.5 roadmiles by dirt road to river; dirt road entrance to Aleman-Tuxtepec road is ca. 2.4 roadmiles W of divergence of roads to Ciudad Aleman and Cosamaloapan
 |  |  USNM_1282339
 Veracruz, Rio Papaloapan off Rt. Mex. 175 ca. 7.8 roadmiles S of the town square of Tlacotalpan
 |  USNM_1282337
 Veracruz, Rio Papaloapan off Rt. Mex. 175 in Cosamaloapan
 |  USNM_1282337
 Veracruz, Rio Papaloapan off Rt. Mex. 175 in Cosamaloapan
 |  |  USNM_1282336
 Veracruz, Rio San Juan at Rt. Mex. 25 ca. 20.5 roadmiles S of Santiago Tuxtla (junction of Rt. Mex. 25 and Rt. Mex. 180), and ca. 16.2 roadmiles from junction of Rt. Mex. 25 and Rt. Mex. 145
 |  USNM_1282336
 Veracruz, Rio San Juan at Rt. Mex. 25 ca. 20.5 roadmiles S of Santiago Tuxtla (junction of Rt. Mex. 25 and Rt. Mex. 180), and ca. 16.2 roadmiles from junction of Rt. Mex. 25 and Rt. Mex. 145
 |  USNM_1282378-79
 Veracruz, Rio San Juan at Rt. Mex. 25 ca. 20.5 roadmiles S of Santiago Tuxtla (junction of Rt. Mex. 25 and Rt. Mex. 180), and ca. 16.2 roadmiles from junction of Rt. Mex. 25 and Rt. Mex. 145
 |  |  USNM_1282341-42
 Veracruz, Rio Tempoal (or Rio Calabazo) at Rt. Mex. 105 between Tempoal and Platon Sanchez. N21°25'00" W98°23'30" 8 Feb 82
 |  USNM_1282341-42
 Veracruz, Rio Tempoal (or Rio Calabazo) at Rt. Mex. 105 between Tempoal and Platon Sanchez. N21°25'00" W98°23'30" 8 Feb 82
 |  USNM_1282340
 Veracruz, Rio Tesechoacan at Tesechoacan, ca. 0.5 miles N of bridge of Rt. Mex. 145 (ca. 9.3 roadmiles W of junction of Rt. Mex. 145 and Rt. Mex. 25)
 | 
 COMA_B.0910. Cosamaloapan, Veracruz, México COMA_B.0977. Laguna de San Marcos, San Cristóbal, Veracruz, México 
 unknown |