Representatives of the extant lichenized fungal genera Usnea and Ochrolechia and the lichen-inhabiting (lichenicolous) fungus Lichenostigma were already present in the Paleogene amber forests of
Representatives of the extant lichenized fungal genera Usnea and Ochrolechia and the lichen-inhabiting (lichenicolous) fungus Lichenostigma were already present in the Paleogene amber forests of