Despite the abundance of cockroaches (n = 593 specimens of 18 genera and 30 species) in the Mongolian Cretaceous, there is a single formally established and four reported species of Blattaria from the Shar-Tologoy (Valditermes acutipennis Ponomarenko, 1988; Liadoblattina mongolica Vršanský, 2003; Archimesoblatta altera Vršanský, 1997; Praeblattella dichotoma Vršanský, 2003; Cretophotina mongolica Gratshev and Zherikhin, 1993). Nuurcala coloris and Vitisma okata spp. n. are reported here from Early Cretaceous, which represent genera restricted to Laurasia. These fossil genera were documented from Early Cretaceous of Asia (Russian Baissa; Mongolian Bon Tsagaan, Sharin-Gol, Khulirt, Bakhar; Chinese Meitian, Yixian, Daohugou; Japanese Fukui) and Europe (Montsec, Spain). Samples with well-preserved venation and coloration provided correct systematic position with categorization of Shar-Tologoy to northern Laurasian biota (Baissa biota with all Cretaceous Mongolian sites) rather than to southern Jehol biota, and with transitional taxa. This evidences obscured long-lasting (> 50 Ma) isolated occurrences of certain abundant insect groups within narrow areas within Laurasia. [ABSTRACT FROM AUTHOR]