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Thu 17 July 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!


Publication R.I. Johnson (1998): summary
     publication summary

Complete Citation

Johnson, R.I. 1998. A new mussel, Potamilus metnecktayi (Bivalvia: Unionidae) from the Rio Grande system, Mexico and Texas with notes on Mexican Disconaias. Occasional Papers on Mollusks 5(76): 427-455. Available electronically.

Attributed Nominal Species

Potamilus metnecktayi R.I. Johnson, 1998
R.I. Johnson, 1998. Occ. Pap. Moll. 5(76): 429, pl. 22, figs. 1-2.
Type(s): HOLOTYPE (ORIG. DESIG.) UMMZ_255018, Rio Salado, 45 mi S Nuevo Laredo, Tamaulipas, Mexico.

Unio heermanii B.H. Wright, 1888
‘Lea’ of Authors.
B.H. Wright, 1888. Check List N. Amer. Unionidae etc.: [3].
Singley, 1893. Geol. Surv. Texas (1892): 322.
R.I. Johnson, 1998. Occ. Pap. Moll. 5(76): 448.
R.I. Johnson, 1999. Occ. Pap. Moll. 6(77): 27.
(error for Unio heermannii Lea, 1861)

Taxonomic Opinions

Actinonaias walkeri Baker, 1922 = Disconaias fimbriata

Cyrtonaias tampicoensis (Lea, 1838)
+ Unio berlandierii Lea, 1857
+ Unio heermannii Lea, 1861
+ Unio saladoensis Lea, 1860

Disconaias disca (Lea, 1838)
+ Unio panacoensis Philippi, 1843
+ Unio mexicanus Sowerby, 1867
+ Unio lapidosus Kobelt, 1893
+ Unio (Lampsilis) discus var. connectens Martens, 1900
+ Lampsilis fimbriata Frierson, 1907
+ Lampsilis (Proptera) salinasensis Dall, 1908

Disconaias disca (Lea, 1838) = Disconaias panacoensis

Disconaias disca (Lea, 1838) = Disconaias fimbriata

Lampsilis explicata (Morelet, 1849) = Cyrtonaias explicata
+ Unio explicatus Fischer & Crosse, 1894
+ Lampsilis (Proptera) lividus Simpson, 1900

Potamilus metnecktayi new species

Potamilus purpurata (Lamarck, 1819) = Potamilus purpuratus
+ Unio coloradoensis Lea, 1856

 
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