Abstract
The third of three whole‐plant cordaitaleans we reconstructed from a single Early Permian locality in northern China is Shanxioxylon taiyuanense. The name is based on the stem S. taiyuanense B. Tian & S.‐J. Wang emend. S.‐J. Wang & J. Hilton, which has a large septate pith and endarch cauline bundles that generate mesarch leaf traces that dichotomize at the pith margin. The comparatively small, elongate leaves with few veins and thickened margins are assigned to Cordaites taiyuanensis S.‐J. Wang & B. Tian emend. S.‐J. Wang and J. Hilton, which is here nomenclaturally typified after a previous invalid publication. Fertile axes are diamond shaped in transverse section, bearing in a tetrastichous arrangement numerous bracts and secondary shoots that consist of basal leaflike sterile scales and apically concentrated fertile scales. Male cones of Cordaitanthus ximinensis S.‐J. Wang & B. Tian consist of 20–30 sterile scales and an unknown number of fertile scales that produce pollen assignable to Florinites. Fe...
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