title: [On the controversial questions of the taxonomy of Bivalvia (Mollusca): too many species or too few characters?].
abstract: Problems emerging in the course of taxonomic studies and species diagnostics of freshwater bivalves are discussed by the example of one of the bivalve groups (the family Unionidae). It is shown that one of the causes of the current, diametrically opposing views on specific and generic systematics of Bivalvia is the fact that researchers revising taxonomic groups ignore complex analysis of several independent characters (conchological, anatomical, biochemical, genetic, etc.).
authors.forename: A L
authors.initials: AL
authors.lastname: Rizhinashvili
mesh_terms: D000818:Animals; D049872:Bivalvia / Q000033:anatomy & histology / Q000145:classification; D019143:Evolution, Molecular; D005618:Fresh Water; D010802:Phylogeny