A Jurassic wood providing insights into the earliest step in Ginkgo wood evolution.

A Jurassic wood providing insights into the earliest step in Ginkgo wood evolution.
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侏罗纪木材让我们深入了解银杏木材进化的最早步骤

DOI:
10.1038/srep38191
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发表时间:
2016-12-16
期刊:
影响因子:
4.6
通讯作者:
Zheng S
Zheng S
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Jiang Z;Wang Y;Philippe M;Zhang W;Tian N;Zheng S

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银杏叶和生殖器官的化石记录可以追溯到中侏罗世(1.7亿年)。然而,在早白垩世晚期之前的地层中,还没有报道过可以安全地分配给银杏目的化石木材记录。1亿年)。本文报道了中国东北中-晚侏罗世过渡期存款(1.53 - 1.65亿年)的一个新的化石木材。新的化石木材标本显示了几个银杏特征,包括膨胀的轴向薄壁组织和侵入的管胞顶端。因为它只比有记录的最古老的银杏生殖器官(义马组,1.7亿年)稍微年轻一点,这个化石木很可能代表了最古老的真正的银杏化石和银杏进化中缺失的祖先形式。
The fossil record ofGinkgoleaf and reproductive organs has been well dated to the Mid-Jurassic (170 Myr). However, the fossil wood record that can safely be assigned to Ginkgoales has not yet been reported from strata predating the late Early Cretaceous (ca. 100 Myr). Here, we report a new fossil wood from the Mid-Late Jurassic transition deposit (153–165 Myr) of northeastern China. The new fossil wood specimen displays severalGinkgofeatures, including inflated axial parenchyma and intrusive tracheid tips. Because it is only slightly younger than the oldest recordedGinkgoreproductive organs (the Yima Formation, 170 Myr), this fossil wood very probably represents the oldest bona fide fossilGinkgowood and the missing ancestral form ofGinkgowood evolution.
DOI: 10.1016/j.revpalbo.2010.06.010
发表时间: 2010-09-01
影响因子: 1.9
作者:
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