Depressed river mussel

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Depressed river mussel
Pseudanodonta complanata - showing rugae.jpg
Left valve of Pseudanodonta complanata showing close-up of rugae on the umbo
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Bivalvia
Subclass: Palaeoheterodonta
Order: Unionoida
Family: Unionidae
Genus: Pseudanodonta
Species: P. complanata
Binomial name
Pseudanodonta complanata
Rossmässler, 1835
The depressed river mussel
10 live individuals of the depressed river mussel

The depressed river mussel or compressed river mussel, Pseudanodonta complanata, is a species of freshwater mussel, an aquatic bivalve mollusk in the family Unionidae, the river mussels. The species name comes from the flattened shape of its shell.

This species is found throughout northern Europe, but it is endangered throughout its range.

While the survival of this species is thought to be threatened by pollution and the dredging of the slow-moving channels of water in which it lives, the species is also said to be "easily overlooked" (it can be confused with Anodonta anatina or juvenile Anodonta cygnea) and thus it may be actually be more prevalent than current records show.


Its native distribution is European. It has been recorded from:


  1. ^ Van Damme, D. (2011). "Pseudanodonta complanata". IUCN Red List of Threatened Species. Version 2012.2. International Union for Conservation of Nature. Retrieved 22 April 2013. 
  2. ^ a b (Czech) Horsák M., Juřičková L., Beran L., Čejka T. & Dvořák L. (2010). "Komentovaný seznam měkkýšů zjištěných ve volné přírodě České a Slovenské republiky. [Annotated list of mollusc species recorded outdoors in the Czech and Slovak Republics]". Malacologica Bohemoslovaca, Suppl. 1: 1-37. PDF.
  3. ^ Juřičková L., Horsák M. & Beran L., 2001: Check-list of the molluscs (Mollusca) of the Czech Republic. Acta Soc. Zool. Bohem., 65: 25-40.
  4. ^ Red List of the molluscs (Mollusca) of the Czech Republic
  5. ^ (German) Glöer P. & Meier-Brook C. (2003) Süsswassermollusken. DJN, pp. 134, strana 109, ISBN 3-923376-02-2
  6. ^
  7. ^ Pseudanodonta complanata - Polish Red Data Book of Animals
  8. ^ (Czech) Měkkýši (Mollusca) České republiky a Slovenska
  9. ^ [1] cited February 16, 2007