European freshwater mussels (Unio spp., Unionidae) in Siberia and Kazakhstan: Pleistocene relicts or recent invaders? - ScienceDirect
Unio delphinus · iNaturalist
File:Škeble.jpg - Wikimedia Commons
Shell shape of Unio species according to Zhadin's (1938) system: A, U.... | Download Scientific Diagram
A manual of zoology. PHYLUM MOLLUSCA 265 1. THE PELECYPODA A Fresh-water Mussel will serve as a convenient example of the Pelecypoda.1 Fresh-water mussels are found in rivers and lakes in