Nodularia micheloti – Solid Freshwater Mussel from Guizhou, China

This specimen originates from Guizhou Province, China, and is a widely distributed species. The shell is solid and thick, exhibiting an elongate-ovate shape. The anterior end is rounded, while the posterior end is slightly protruding. The ventral margin is somewhat concave at its central section. The umbo is positioned anteriorly. Growth lines are concentric. The hinge plate possesses a central tooth, while the lateral teeth on both valves are reduced. This combination of traits makes the species important for taxonomic studies and valuable for collectors.