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首页> 外文期刊>International journal of plant sciences >SYSTEMATICS, PHYLOGENETICS, AND REPRODUCTIVE BIOLOGY OF FLEMINGITES ARCUATUS SP. NOV., AN EXCEPTIONALLY PRESERVED AND PARTIALLY RECONSTRUCTED CARBONIFEROUS ARBORESCENT LYCOPSID
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SYSTEMATICS, PHYLOGENETICS, AND REPRODUCTIVE BIOLOGY OF FLEMINGITES ARCUATUS SP. NOV., AN EXCEPTIONALLY PRESERVED AND PARTIALLY RECONSTRUCTED CARBONIFEROUS ARBORESCENT LYCOPSID

机译：FLEMINGITES ARCUATUS SP的系统学，系统发育学和生殖生物学。 11月，一种保存完好的且部分重建的碳质树状脂多糖

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摘要

Exceptionally preserved lycopsid remains from an ex situ chert-carbonate cobble found on the Yorkshire coast, United Kingdom, are here reconstructed as Flemingites arcuatus sp. nov. Megasporophylls are C shaped and emerge from the cone axis at a relatively acute angle. Megasporangia are adaxial on sporophylls and typically contain four megaspore tetrads. Megaspores are described as Lagenicula wellmanii sp. nov.; they are 1.0-1.7 mm in diameter and have a pronounced gula and numerous vermiform spines with bulbous apices. Archegonia occur in some megaspore apices, and developing oocytes are also rarely preserved. Trilete microspores found in an isolated microsporangium conform to Lycospora orbicula. Leaves and sporophylls are helically arranged and have stomata organized in rows along abaxial grooves. Correlation of these organs allowed the resulting partial plant to be added to an existing cladistic matrix. Analyses confirmed the provisional assignment of F. arcuatus to the stem genus Paralycopodites. Stratigraphic comparisons of the megafossils and spores restrict the likely age of the cobble from the Early Mississippian to the Middle Pennsylvanian. The plants were deposited alongside univalve crustaceans in a swamp environment where preservation was probably enhanced by local volcanic activity. The as yet unlocated lagerstatte appears comparable in quality of preservation with the Lower Devonian Rhynie Chert.
机译：来自英国约克郡海岸发现的异质硅酸盐碳酸盐卵石的异常保存的番茄红素残骸在这里被重建为Flemingites arcuatus sp。十一月巨孢子叶呈C形，并以相对锐角从圆锥轴出现。大孢子囊在孢子叶上，通常含有四个大孢子四倍体。大孢子被描述为Lagenicula wellmanii sp。十一月它们的直径为1.0-1.7毫米，有明显的牙龈和许多带有球茎尖的ver形棘。弓形虫发生在一些大孢子顶端，并且发育中的卵母细胞也很少被保存。在分离的小孢子囊中发现的Trilete小孢子与Lycospora orbicula一致。叶子和孢子叶呈螺旋状排列，气孔沿着背面的凹槽成排排列。这些器官的相关性允许将得到的部分植物添加到现有的分类矩阵中。分析证实，F。arcuatus暂时归入茎旁斜纹夜蛾属。巨型化石和孢子的地层比较限制了从早期密西西比河到宾夕法尼亚中部的卵石的可能年龄。这些植物与双壳类甲壳动物一起沉积在沼泽环境中，那里的火山活动可能增强了保存能力。尚未定位的拉格施塔特的保存质量似乎与下泥盆纪Rhynie Chert相当。

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  • 来源
    《International journal of plant sciences》 |2010年第7期|P.783-808|共26页
  • 作者

    Liadan G. Stevens; Jason Hilton; Andrew R. Rees; Gar W. Rothwell; Richard M. Bateman;

  • 作者单位

    School of Geography, Earth, and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom Department of Palaeontology, Natural History Museum, Cromwell Road, London SW7 5BD, United Kingdom;

    rnSchool of Geography, Earth, and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom;

    rnSchool of Geography, Earth, and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom;

    rnDepartment of Environmental and Plant Biology, Ohio University, Athens, Ohio 45701, U.S.A.;

    rnSchool of Geography, Earth, and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    lycopsid; Carboniferous; Flemingites; Lagenicula; Paralycopodites; terrestrial lagerstatten;

    机译：番茄红素石炭纪弗莱明人Lagenicula;伞足纲;陆地贮藏菌;
  • 入库时间 2022-08-18 03:45:40

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