Twenty type specimens of beetles from the Upper Triassic and Lower Jurassic of southern China and Xinjiang are re-examined in detail: five species within three genera are assigned to Cupedidae; four species in four genera assigned to Elateridae; five species in four genera are assigned to Permosynidae, three species in two genera are assigned to Schizocoleidae; three species in three genera are incertae familiae. A new species, Notocupes lini sp. nov. is proposed for Notocupoides fasciatus Ponomarenko, 1966. A new genus, Toksunius gen. nov.,is proposed for Ademosynoides chinaticus Lin, 1992, resulting in Toksunius chinaticus (Lin, 1922) comb. nov..