牛绍武. 2019: 再论龙凤山藻属(Longfengshania Du)的形态学特征与系统分类. 地质通报, 38(8): 1259-1265.
    引用本文: 牛绍武. 2019: 再论龙凤山藻属(Longfengshania Du)的形态学特征与系统分类. 地质通报, 38(8): 1259-1265.
    NIU Shaowu. 2019: More on the morphological characteristics and systematic texology of genus Longfengshania Du, 1982 (Magascopic Alga). Geological Bulletin of China, 38(8): 1259-1265.
    Citation: NIU Shaowu. 2019: More on the morphological characteristics and systematic texology of genus Longfengshania Du, 1982 (Magascopic Alga). Geological Bulletin of China, 38(8): 1259-1265.

    再论龙凤山藻属(Longfengshania Du)的形态学特征与系统分类

    More on the morphological characteristics and systematic texology of genus Longfengshania Du, 1982 (Magascopic Alga)

    • 摘要: 龙凤山藻属(Longfengshania)由叶状体、柄和固着器三部分组成,类似高等植物根、茎、叶的器官分化,分别营光合作用、支撑藻体和固着功能,营海底固着生活。关于其形态学特征,特别是关于它的系统分类一直存在不同看法。根据形态学特征、个体发育中的生物重演律,以及古生态、古气候特征等认为,该属更接近于褐藻门海带目海带科的一些分子,似为海带目的早期原始类型。由于该属藻体较小,叶状体(叶片)全缘无褶皱或刻裂,固着器不分枝足状,与海带科也有较大区别,加之时代久远,在海带目中另立一科也是适宜的,经过适当修订后,进一步确认了龙凤山藻科的存在。对龙凤山藻属与龙凤山藻科的定义进行了重新修订,初步解决了它们的系统分类问题,为古藻类的早期演化提供了化石证据,具有生物学上的重要意义。概述了海藻类各门、纲、目及科级藻类的一般形态学特征,以供对比研究时参考,从而为确定龙凤山藻属的系统分类提供依据。

       

      Abstract: The fossil bodies of Longfengshania are composed of the tow part with foliate and sub-leafstalk fixed organs, and thus the author considers that the genus represents the fossils of marine sessile multicellular Mataphyta with possible relationships to the Phaeophyta and Chlophyta. According to the morphological characteristics, biogenetic law and palaeoecology, the algal body of genus Longfengshania Du is composed of three parts with blade, stripe and holdfast, belonging to Phyllum Phaeophyta, Order Laminariales, Family Longfengshaniaceae. The initial solution of systematic texology of genus Longfengshania Du is of important significance in the study of biology and palaeontology.

       

    /

    返回文章
    返回