Sixty four samples from four formations namely the Java, Canadawav, Chadakoin and Cattaraugus of the Upper Devonian of New York State and Pennsylvania U.S.A., have revealed profuse assemblages of Palynomorphs. All of these Famennian deposits which are from classic areas of North American Devonian stratigraphy, yielded a characteristic pseudosaccate miospore genus Auroraspora. Excellently well preserved miospore forms of this taxon have been found particularly useful since these are abundant and exhibit distinctive pattern of folding developed to varying degrees on different forms of the genus which resulted in the recognition of broad evolutionary, biostratigraphical and morphological subdivisions. A gradual evolutionary change in the nature of folding, from very conspicuous to simple, of the genus from the base to a point almost at the top of the sequence is observed. These Auroraspora complexes, which coincide with the miospore zonations delineated from the present material, have been established. These are in ascending stratigraphical order: the Auroraspora pseudocrista, A solisorta and A. commutata complex. The material investigated is lithologically composed of blue grey shales and siltstones weathered to olive green colour.