Research of Precambrian silicified spheroidal fossils' preservation mechanism: Fish egg silicified simulation experimental taphonomy
Research of Precambrian silicified spheroidal fossils' preservation mechanism: Fish egg silicified simulation experimental taphonomy
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前寒武纪硅化球状化石保存机制研究：鱼卵硅化模拟实验埋藏学
DOI：
10.1016/j.precamres.2018.05.004
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发表时间：
2018
影响因子：
3.8
通讯作者：
Hua Hong
中科院分区：
文献类型：
--
作者：
Ren Jinjie;Zhang Jian;Bai Lin;Hua Hong
Silicified spheroidal fossils have been found in the Ediacaran Doushantuo Formation in South China. Their organic material was exceptionally well-preserved, thus important to understanding early biological evolution. But the preservation mechanism of the silicified spheroidal fossils was unclear. As a result, research on the preservation mechanism at primal mineralization process was necessary. For this paper,Megalobrama amlycephalaeggs were inserted into jars with different silicified concentration solutions. The eggs were immersed in the concentrated solutions for a period of two weeks and were removed afterwards for observation. Once extracted, the fish eggs were found to be separated into various shapes and sizes and rapidly preserved. The experiment showed that the metasomatism and coating were two different kinds of preservation. Upon closer examination of the fish eggs, not all the nuclei were silicified. Additionally, the surface of these eggs was covered by specks of tiny mineral crystals, particularly a tiny mineral that grew vertically in a special form of special biological texture. These tiny minerals helped protect the egg framework and preserved the delicate surface ornamentation. The taphonomy experiment had an important impact and was beneficial to learn more about silicified spheroidal fossils.
