Burial Type and Living Environment of Early Carboniferous Flora form Eastern Liaoning Early Carboniferous Flora in Southeastern Henan Studies on Two Palaeozoic Seeds from China A New Species of Scolecopteris from the Upper Carboniferous of Shanxi, China and Its Significance ON THE CONCEPT OF “CATHAYSIA FLORA” AND ITS APPLIED LIMIT Discovery of Ferns with Reticulate Veins in Early-Middle Carboniferous from North Qilian Zoulang Area, Gansu Province and Their Significance Discovery and Significance of the Genus Cardiopteris Microfossil assemblage from the Late of Middle Carboniferous in Western Shaan-Gan-Ning Basin, Northwest China Microfossil Assemblages from Upper Carboniferous in Ordos Basin, Northwest China