study of plant macrofossils of jurassic sediments of shemshak group in eshkevarat-e-olia areas led to identification of two species consisting lobifolia rotundifolia from ferns group (division pteridophyta & filicales order) and ptilophyllum vasekgahense from gymnospermae group (division cycadophyta & order bennettitales) that had been reported from rhaetian (late triassic) and dogger (middle j...