Umbonal musculature and relationships of the Late Triassic filibranch unionoid bivalves Author Skawina, Aleksandra Author Dzik, Jerzy text Zoological Journal of the Linnean Society 2011 2011-10-25 163 3 863 883 http://dx.doi.org/10.1111/j.1096-3642.2011.00728.x journal article 10.1111/j.1096-3642.2011.00728.x 0024-4082 5441920 GENUS SILESUNIO NOV. Type species: Silesunio parvus gen. et sp. nov. Etymology: The genus name refers to the geographic region of the findings of type species of unionoid bivalves ( Silesia ). Diagnosis: As for the type species.