Halysis Høeg, 1932 — an ancestral tabulate coral from the Ordos Basin, North China
Halysis Høeg, 1932 — an ancestral tabulate coral from the Ordos Basin, North China
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Hathesis Häeg，1932 年 — 来自中国北部鄂尔多斯盆地的祖先板状珊瑚
DOI：
10.1186/s42501-020-00073-x
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发表时间：
2020-09
期刊：
影响因子：
--
通讯作者：
Zheng-Liang Huang
中科院分区：
文献类型：
--
作者：
Li-Jing Zheng;Hong-Xia Jiang;Ya-Sheng Wu;Hong-Ping Bao;Yue-Yang Zhang;Jun-Feng Ren;Zheng-Liang Huang
华北鄂尔多斯盆地西缘的中奥陶世达里维尔阶富含有问题的钙质微化石Hathesis。该地区丰富且保存完好的哈莱西斯标本有助于对其骨骼结构和管状微观结构的详细研究。 Halysis 在形态、骨骼结构和微观结构以及繁殖模式上不同于钙化蓝藻和钙质红藻和绿藻。 Halysis 通常由多个并置的平行管组成，并排列成片状（“多管”类型），或者仅由一根管组成（“单管”类型）。在“多管”Hathesis 中，由于在母管中心插入微晶壁，导致管分叉裂变。这项研究首次证明Hathesis的管壁具有由垂直于管壁表面的纤维状方解石组成的层纤纤维（纤维正常）微观结构，并认识到由一根管组成的“单管”型Hathesis；此外，这项研究首次发现“多管”Hathesis通过两根管的连接产生芽芽，而“单管”Hathesis则显示出广角Y形分枝。基于这些发现，本研究进一步将 Hathesis 与板状珊瑚进行比较。 Halysis 在地层上出现早于 Catenipora 和 Aulopora，并且具有较小的管尺寸。 “多管”Halysis 类似于 Catenipora，而“单管”Hathesis 在骨骼结构和微观结构方面类似于 Aulopora，其管壁由垂直于管壁表面的纤维状方解石组成的层状纤维微观结构。 Catenipora 和 Hathesis 的特征都是没有间隔刺。这些相似之处表明 Hathesis 可能是类链珊瑚和类 Aulopora 板状珊瑚的祖先。
The problematic calcareous microfossil Halysis is abundant in the Middle Ordovician Darriwilian Stage of the western edge of the Ordos Basin, North China. The rich and well-preserved specimens of Halysis in this area facilitate detailed studies for its skeletal construction and tube microstructure. Halysis differs from calcified cyanobacteria and calcareous red and green algae in morphology, skeletal construction and microstructure, as well as reproduction mode. Halysis typically consists of multiple juxtaposed parallel tubes arranged in sheets (‘multiple-tube’ type) or is just composed of one tube (‘single-tube’ type). In ‘multiple-tube’ Halysis, tube fission by bifurcation results from the insertion of a microcrystalline wall at the center of a mother tube. This study demonstrates for the first time that the tube walls of Halysis have a laminofibrous (fibronormal) microstructure, composed of fibrous calcite perpendicular to wall surface, and recognizes the ‘single-tube’ type Halysis composed of one tube; in addition, for the first time, this study finds out that ‘multiple-tube’ Halysis develops buddings from the conjunction of two tubes and ‘single-tube’ Halysis shows wide-angle Y-shaped branchings. Based on these findings, this study further compares Halysis with tabulate corals. Halysis appears stratigraphically earlier than Catenipora and Aulopora, and has a smaller tube size. ‘Multiple-tube’ Halysis resembles Catenipora and ‘single-tube’ Halysis resembles Aulopora in skeletal construction and microstructure, and in their tube walls of laminofibrous microstructure composed of fibrous calcite perpendicular to the tube wall surface. Catenipora and Halysis are both characterized by the absence of septal spines. The similarities suggest that Halysis may be the ancestor of Catenipora-like and Aulopora-like tabulate corals.
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影响因子：
1.6
作者：
J. Turner;W. Woelkerling
通讯作者：
J. Turner;W. Woelkerling
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影响因子：
1.3
作者：
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通讯作者：
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影响因子：
5.8
作者：
A. Draut;P. Clift
通讯作者：
A. Draut;P. Clift
影响因子：
1.8
作者：
Granier, Bruno
通讯作者：
Granier, Bruno
DOI：
--
发表时间：
1981
期刊：
--
影响因子：
--
作者：
D. Hill
通讯作者：
D. Hill