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A new form of pinnate foliage, Nanshanopteris nervosa gen. et sp. nov. is described from the Changhsingian Sunan Formation in Dashankou, Gansu, western China. Pinnules are auriculate, semicircular and tongue-shaped. The apical and basal pinnules gradually decrease in size relative to those in the middle part of the frond. The venation is dichotomous and very dense. Veins are derived from the rachis...
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