MUSSELp
 
MUSSELpdb
  Introduction
Browse
d'basing
 
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
 
 

Page last updated
Wed 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!

Search the database pages:

Bivalvia | ... | Unionoidea | Unionidae | Ambleminae | Quadrulini | Megalonaias nervosa

nominal species Unio crassus var. giganteus Barnes, 1823

Barnes, 1823. Amer. J. Sci. 6 (1-2): 119.

= Megalonaias nervosa

Taxonomic Opinions

+ Megalonaias nervosa (Rafinesque, 1820) — Pfeiffer et al., 2018

= Megalonaias gigantea — ITIS, 2012

+ Megalonaias nervosa (Rafinesque, 1820) — IUCN, 2011

+ Megalonaias nervosa (Rafinesque, 1820) — Watters et al., 2009

+ Megalonaias nervosa (Rafinesque, 1820) — Williams et al., 2008

+ Megalonaias nervosa (Rafinesque, 1820) — Brim Box & Williams, 2000

+ Megalonaias nervosa (Rafinesque, 1820) — Contreras-Arquieta, 2000

+ Megalonaias nervosa (Rafinesque, 1820) — R.I. Johnson, 1999

+ Megalonaias nervosa (Rafinesque, 1820) — Parmalee & Bogan, 1998

+ Megalonaias nervosa (Rafinesque, 1820) — Howells et al., 1996

+ Megalonaias nervosa (Rafinesque, 1820) — Vidrine, 1993

+ Megalonaias nervosa (Rafinesque, 1820) — Oesch, 1984

= Amblema gigantea (Barnes) — Davis & Fuller, 1981

= Megalonaias gigantea (Barnes, 1823) — R.I. Johnson, 1980

= Megalonaias gigantea — Gordon et al., 1979

= Megalonaias gigantea (Barnes) — Mathiak, 1979

= Megalonaias gigantea (Barnes, 1823) — Burch, 1975

= Megalonaias gigantea (Barnes, 1823) — Heard & Guckert, 1970

= Megalonaias gigantea gigantea (Barnes, 1823) — Haas, 1969

= Megalonaias gigantea (Barnes, 1823) — Haas, 1969

+ Megalonaias nervosa Rafinesque, 1820 — Morrison, 1969

= Megalonaias gigantea (Barnes, 1823) — Murray & Leonard, 1962

= Amblema (Megalonaias) gigantea (Barnes) — Haas, 1930

= Megalonaias gigantea (Barnes, 1823) — F.C. Baker, 1928

= Amblema (Megalonaias) gigantea (Barnes, 1823) — Frierson, 1927

= Megalonaias gigantea (Barnes) — Ortmann, 1925

= Megalonaias gigantea (Barnes) — Ortmann, 1924

= Megalonaias gigantea (Barnes, 1823) — Ortmann & Walker, 1922

+ — Simpson, 1914

= Unio crassus var. giganteus Barnes — Barnes, 1823
 
NSF icon MUSSEL icon
"Making the world a better place, one mollusk at a time."