A new gnetalean macrofossil from the Lower Cretaceous of the Laiyang Basin, eastern China

被引：0
|
作者：
Peihong Jin [1 ]
Mingzhen Zhang [1 ]
Baoxia Du [2 ]
Jing Zhang [2 ]
Bainian Sun [2 ]
机构：
[1] Key Laboratory of Petroleum Resources,Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences
[2] Key Laboratory Western China's Mineral Resources of Gansu Province,Lanzhou
来源：
PlantDiversity | 2024年 / 46卷 / 05期
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中图分类号：
Q914 [古植物学];
学科分类号：
摘要：
<正>Gnetophytes are a key group of plant for understanding seed plant phylogeny, partly because of their unique and elusive morphology, such as xylem with vessels, phloem with chaperones, reticular veins, and double fertilization(Endress, 1996). In particular, the ovule bears a membranous integument, the upper part of which extends beyond the seed envelope to form a micropylar tube.
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页码：678 / 682
页数：5
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