Abstract <p>A proximal fragment of tibiotarsus (fused tibia and fibula) from the Lower Cretaceous Murtoi Formation at the Mogoito locality in Buryatia, Russia, is attributed to a pterosaur Dsungaripteridae indet. on the base of a relatively large cnemial crest and considerable bone thickness of the tibia shaft. The pterosaurs from the Mogoito locality had previously been identified based on isolated teeth attributed to Ornithocheiridae. The described tibiotarsus represents the second record of Dsungaripteridae in Russia and the second pterosaur bone known from the Lower Cretaceous of Russia.</p>