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Studies on Two Palaeozoic Seeds from China On the Application of Computer Graphics Technique to Reconstruct Three-Dimension of Coal Ball Plants A New Species of Scolecopteris from the Upper Carboniferous of Shanxi, China and Its Significance A New Species of Lepidodendroid Fructification -Achlamydocacpon sinensis Anatomical Structure of Leaf Cushion of Lepidodendron lepidophloides Yao On the Anatomical Structures of the Lepidodendralean Stem “Lepidodendron” tripunctatum from Coal Balls of Taiyuan Formation in Shandong Province, North China New Species of the Isolated Psaroniaceous Rachis from the Early Permian in China Diaphorodendron rhombicum sp. nov., a New Anatomically Preserved Lepidodendralean Stem from the Taiyuan Formation in Southern Shandong Province, North China Studies on the Pleozoic Seed---Genus Callospermarion Anatomical Structures of Microsporangiate Cone of Lepidodendrales-- Lepidos trobus Shanxiense sp. nov. Anatomy of a New Species of Scolecopteris (Marattiales) from Early Stage of Early Permian in China Anatomically-preserved Lepidodendralean Plants from Permian Coal Balls of China: Sigillariopsis Scott A New Species of Petrified Ovules of Late Paleozoic On the Anatomy of Dadoxylon Taiyuanensis