“…This deposit can be generally assigned within the Linglongta beds, which are the lacustrine interbed clasolites of the large scale andesite of the Tiaojishan Formation mainly occurring in western Liaoning, northern Hebei, and western Beijing, including several exceptional fossil localities such as Daxishan, Nanshimen, Bawanggou, and Fanzhangzi (Huang, 2015, 2016; Huang et al, 2018a). The Linglongta biota contains numerous well-preserved fossils, e.g., insects, bivalves, conchostracans, ostracods, gastropods, charophytes, pollen, and spores (Duan et al, 2009; Huang, 2016; Huang et al, 2018a), as well as diverse vertebrate fossils including fishes (Huang, 2015), salamanders (Gao and Shubin, 2012; Wang et al, 2015; Jia and Gao, 2016, 2019), pterosaurs and their eggs (e.g., Lü, 2009; Lü et al, 2010, 2011; X. Wang et al, 2009; Wang et al, 2010; Cheng et al, 2012; Yang et al, 2019), feathered dinosaurs (e.g., Hu et al, 2009; Xu et al, 2011; Godefroit et al, 2013a, b), and mammals (e.g., Meng et al, 2006; Luo et al, 2011; Yuan et al, 2013; Zhou et al, 2013; Bi et al, 2014). However, the fossil insects from the Linglongta biota are poorly known.…”