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首页> 外文期刊>Sbornik Narodniho Muzea v Praze, Rada B. Prirodovedecka >EARLY CRETACEOUS MONOCOTS: A PHYLOGENETIC EVALUATION
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EARLY CRETACEOUS MONOCOTS: A PHYLOGENETIC EVALUATION

机译：白垩纪早期的山核桃：系统发育评价

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Reports of Early Cretaceous monocots have been questioned as being based on invalid systematic criteria and not supported byphylogenetic analyses. Our analyses, using a morphological data set for basal angiosperms and assuming relationships among living taxaderived from morphological and molecular data, support a monocot affinity for Liliacidites, i.e., boat-shaped monosulcate pollen with gra-ded sculpture that becomes finer at the ends of the grain. However, pollen with finer sculpture at the poles, originally assigned to Liliacidi-tes but segregated as has been associated with floral parts called Anacostia, which our analysis places in Austrobaileyales. Pol-len identified as "Liliacidites" minutus was produced by Virginianthus, near the base of Laurales. Masses of striate pollen called Mayoa shareunique derived characters with some Araceae, but the coarsely reticulate pollen genus Pennipollis and associated floral remains, also com-pared with Alismatales, are more likely related to Chloranthaceae (with or without Ceratophyllum). Addition of Acaciaephyllum, a shootbearing leaves with apically fused major venation, to a seed plant data set supports a relationship with monocots rather than superficiallysimilar living and fossil Gnetales. Late Albian-early Cenomanian leaf fragments from Australia have derived features supportive of a relati-onship to monocots.
机译：早白垩纪单子叶植物的报告被质疑为基于无效的系统标准，并没有得到系统发育分析的支持。我们的分析使用基础被子植物的形态学数据集并假设从形态学和分子数据得出的活体紫杉类之间的关系，支持了对Liliacidite的单子叶植物亲和力，即船形的单硫酸盐花粉，带有渐层状雕塑，在花粉的末端变得更细。粮食。但是，花粉的两极花粉雕塑更精细，最初被分配给Liliacidi-tes，但由于与称为Anacostia的花卉部分相关而被隔离，我们的分析结果将其放置在Austrobaileyales中。被鉴定为“ Liliacidites” minutus的Pol-len是由Laurales基地附近的Virginianthus生产的。大量称为Mayoa的条纹花粉与某些天南星科共享独特的衍生特征，但与Alismatales相比，粗糙的网状花粉属Pennipollis和相关的花remains更可能与叶兰科（有或没有Ceratophyllum）有关。在种子植物数据集中添加相思叶（Acaciaephyllum，具有顶融合的主要脉的芽生叶），可以支持与单子叶植物的关系，而不是表面相似的生物和化石。来自澳大利亚的晚阿尔比早期切诺曼尼亚叶碎片具有支持单子叶植物相关性的特征。

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