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A new Mazon-Creek-type fossil specimen is described as Sumixam maximus gen.and sp.nov., assigned to the taxon Archaeorthoptera Bethoux and Nel,2002(composed of Orthoptera and some fossil relatives):it exhibits one of the diagnostic character states of this taxon,which is the fusion of CuA(emerging from M+CuA)with CuP,or a branch of it.A more precise taxonomic assignment is out of reach.The new taxon exhibits a fusion of the anterior branch of MA with RP,and a point of divergence of MA and MP located near the point of divergence of CuA(from M + CuA),but lack a branching of CuPa.This unique combination of character states is probably derived with respect to a number of contemporaneous species.Sumixam maximus gen.and sp.nov.is most likely the closest known relative of the panorthopterans,which include all the recent Archaeorthoptera.
A new Mazon-Creek-type fossil specimen is described as Sumixam maximus gen. And sp. Nov., Assigned to the taxon Archaeorthoptera Bethoux and Nel, 2002 (composed of Orthoptera and some fossil relatives): it exhibits one of the diagnostic character states of this taxon, which is the fusion of CuA (emerging from M + CuA) with CuP, or a branch of it. A more precise taxonomic assignment is out of reach. The new taxon exhibits a fusion of the anterior branch of MA with RP , and a point of divergence of MA and MP located near the point of divergence of CuA (from M + CuA), but not a branching of CuPa. This unique combination of character states is probably derived with respect to a number of contemporaneous species. Sumixam maximus gen.and sp.nov.is most likely the closest known relative of the panorthopterans, which include all the recent Archaeorthoptera.