Abstract
The first occurrence of the extinct cicadomorphan family Palaeontinidae from the Jiufotang Formation of China is reported based on a specimen assigned to Ilerdocossus cf. fengningensis. The genus Ilerdocossus Gomez Pallerola, 1984 is well known from the underlying Yixian Formation of northern China (Hebei, Liaoning provinces, and Inner Mongolia), as well as the Caliza con Caraceas Formation of Lerida, Spain and the Lower Weald Clay (Surrey, England), UK. The new record represents the stratigraphically youngest occurrence of the family in the Jehol Biota and extends the temporal range of Ilerdocossus into the Aptian (121–113 million years ago).
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