A NEW DICTYOPTERAN FOSSIL FROM THE CARBONIFEROUS-PERMIAN OF XISHAN (BEIJING) WITH DISCUSSIONS ON THE GEOLOGICAL AGES OF INSECT FOSSILS FROM BEIJING
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Abstract:
Here we report a new species belonging to the extinct genus Phyloblatta, Phyloblatta beijingensis sp. nov. , from the Carboniferous-Permian Taiyuan Formation at Seshufen, Mentougou District (Xishan, Beijing) based on a dictyopteran forewing. The new species can be readily separated from other congeners mainly by its prolate clavus. Diverse Phyloblatta dictyopterans have been discovered from the Lower Permian Shanxi Formation in Shanxi Province. The age and biostratigraphy of the insect-yielding formations in Beijing, such as the Tuchengzi, Dahuichang and Xiazhuang formations, are also discussed.
