南黄海CSDP-2井晚泥盆世早期真蕨类Shougangia的形态观察

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南黄海CSDP-2钻井上泥盆统五通组擂鼓台段2 068.00~2 069.02m段岩心识别出了早期真蕨类植物。该植物具有至少三次羽状复叶,末二次羽片互生,小羽片扁平,呈扇状、楔状或舌状,基部收缩,至少一次深裂,裂片边缘钝圆,二分叉的叶脉明显。据此,可鉴定为优美守刚蕨(比较种)(Shougangia cf.S.bella)。本研究为南黄海地区上泥盆统五通组增加了古植物学新资料。
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