Three new genera and four new species of Kobdocoridae (Heteroptera) from the Lower Cretaceous Khasyrty site in Transbaikalia are described: Khasoris yuripopovi gen et sp. nov., Buryatocera beta gen. et sp. nov., Extralapis carens gen et sp. nov., Extralapis breviscutum gen. et sp. nov. Additionally, herein we synonymize Venicoridae Yao, Ren & Cai, 2012 under Kobdocoridae Yu. Popov, 1986 and re-describe the type specimen, Kobdocoris aradinus Yu. Popov, 1986. An identification key for the genera and species of Kobdocoridae is provided.