Eomeropidae is a family of aberrant, flattened scorpionflies represented today by only a single living species, Notiothauma reedi, known from the Nothofagus forests in southern Chile, while all other recognized genera in the family are known only as fossils, with the earliest definitive fossil known from Liassic-aged strata,[1][2] and the youngest from Paleogene-aged strata.[1][3]
^Archibald, S. Bruce, Alexandr P. Rasnitsyn, and Mikhail A. Akhmetiev. "Ecology and distribution of Cenozoic Eomeropidae (Mecoptera), and a new species of Eomerope Cockerell from the Early Eocene McAbee locality, British Columbia, Canada." Annals of the Entomological Society of America 98.4 (2005): 503-514.