Middendorffnaia mongolic – Rare Unionidae from Inner Mongolia, China

This specimen originates from Inner Mongolia, China, a highly unusual and scarcely documented locality for this species. It represents a monotypic genus distributed primarily in the Far East. Literature and imagery pertaining to specimens from this specific region are exceedingly scarce, making individuals from this locality exceptionally rare. This rarity makes the specimen valuable both for malacological research and for advanced collectors.