Sumixam maximus gen.and sp.nov.,a New Pennsylvanian Species of Archaeorthoptera(Neoptera;Indiana,USA)  

作　　者：Olivier BTHOUX Christin GROSSMANN 

机构地区：[1]Freiberg University of Mining and Technology,Institute of Geology,Department of Palaeontology,D09596 Freiberg,Germany [2]Senckenberg Natural History Collections of Dresden,Museum of Zoology,D-01109 Dresden,Germany [3]Senckenberg Natural History Collections of Dresden Museum of Zoology,D-01109 Dresden,Germany

出　　处：《Acta Geologica Sinica(English Edition)》2011年第3期515-520,共6页地质学报（英文版）

摘　　要：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 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.

关 键 词：INSECTA Upper Carboniferous Mazon Creek 

分 类 号：Q915[天文地球—古生物学与地层学]