... The discovered biodiversity of Psocodea in the Mesozoic and Cenozoic is significantly higher, with fossils collected from various localities and horizons. Taxa from the Mesozoic are reported from the Late Jurassic of Kazakhstan [48] and the Cretaceous ambers of Canada, France, Lebanon (Table 1), Myanmar, Russia, Spain, and the USA [37,[49][50][51][52]. Taxa from the Cenozoic are reported from the Eocene limestone of England (Isle of Wight) [53], the Eocene ambers of the Baltic region, China (Fushun), France (Oise), Germany (Bitterfeld amber) and Ukraine (Rovno amber) [54][55][56][57][58][59][60], and the Miocene ambers of Mexico, Costa Rica and the Dominican Republic [29,[61][62][63][64][65]. In the last two decades, the earliest definitive undisputed record of parasitic lice was Megamenopon rasnitsyni Wappler, Smith and Dalgleish, 2004, from the Eocene of Germany (Eckfeld maar) [66,67], although, the recent discovery of Archimenopon myanmarensis Zhang, Rasnitsyn, Zhang, Song, Shih, Ren, Wang, Li and Gao, 2024, assigned to the new stem family Archimenoponidae, from Burmese amber set back their oldest record to the mid-Cretaceous [68]. ...