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“仙踪林国精产品36”-知识课堂

云南发现莲仙踪林国精产品36座蕨类植物新种

来源: 界面新闻
2024-10-30 13:27:36

最佳回答

“仙踪林国精产品36”云南发现莲仙踪林国精产品36座蕨类植物新种

  中新仙踪林国精产品36网昆明10月28日电 (仙踪林国精产品36陈静 陆希成)云南大学古生物研究院28日消息,该院植物古生态研究团队近日在云南上二叠统宣威组发现莲座蕨类植物新种,定名为Cyathocarpus benefoliati Yu.Guo, Zhou et Z.Feng2024,相关研究成果已发表于古植物学国际期刊《古植物与古孢粉学论评》。

图为Cyathocarpus benefoliatii Yu.Guo, Zhou et Z.Feng 2024 繁殖羽片。云南大学 供图

  蕨类植物自晚古生代出现,一直演化发展延续至今,是陆地生态系统的重要组成部分。云南上二叠统盛产丰富的莲座蕨类植物化石。

  科研人员介绍,该化石植物具有独特的末次羽片、繁殖小羽片和原位孢子特征。其羽片为至少三次羽状复叶;末次羽轴上垂直或近垂直着生约18对互生小羽片;繁殖小羽片呈舌形,长4至6毫米,基部宽2至3毫米,其背面中脉两侧各着生一行聚合囊,每行4至7个;聚合囊呈卵形,由4至5个孢子囊组成,紧密排列于小羽片基部至顶端;孢子囊为卵形,呈辐射对称排列,直径400至600微米,无环带;原位孢子直径43至61微米,单缝,光面,属Laevigatosporites/Latosporites型,孢子外壁具三层超微结构。

  云南大学古生物研究院副研究员郭芸为论文第一作者,云南大学仙踪林国精产品36古生物研究院研究员冯卓为论文通讯作者。该项研究得到了中国国家自然科学基金委员会、云南省科技厅、中国科学院等单位项目的支持。(完)

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