特殊化石在具体体内保存的变化
Farid Saleh1, Thomas Clements2, Vincent Perrier3
1Institute of Earth Sciences (ISTE), University of Lausanne, Geopolis, CH-1015 Lausanne, Switzerland.
Swiss journal of palaeontology
|September 18, 2023
概括
这项研究使用概率模型来分析化石在具体的保存. 它揭示了生物对化石化影响的程度如何影响不同化石遗址的软组织保存模式.
科学领域:
- 古生物学的古生物学
- 地质地质地质地质地质地
- 统计建模 统计建模
背景情况:
- 混凝土提供独特的化石保存,有时包括软组织,需要了解化石化过程.
- 概率模型对于比较化石遗址 (Konservat-Lagerstätten) 是有价值的,但仅限于早期古老时代的页岩保存化石.
- 分析具体的化石保存,可以了解不同地质时期和地点的变化.
研究的目的:
- 分析三个具体化石遗址的保存模式:马森溪,蒙特索雷斯矿山和赫雷福德郡仓库.
- 应用统计方法来理解生物参与和内部器官保存概率之间的关系.
- 使用概率框架将具体化石遗址与页岩保存遗址进行比较.
主要方法:
- 统计分析了三个具体的保存场所的保存模式.
- 计算内部器官条件概率以评估生物参与.
- 混凝土现场与之前研究过的页岩保存的Konservat-Lagerstätten进行比较.
主要成果:
- 生物参与具体形成的程度与内部器官条件概率的异质性相关.
- 外部影响的具体化 (赫尔福德郡) 显示统一的概率,而生物介导的具体化 (蒙特索-莱斯-明斯,马森溪) 显示异质性.
- 开发的概率框架有效地区分了各种Konservat-Lagerstätten的保存机制.
结论:
- 生物的参与是控制软组织在具体体内的保存模式的关键因素.
- 概率模型提供了一个强大的框架,用于理解在各种Konservat-Lagerstätten的广泛化石化过程.
- 这项研究扩大了概率模型的应用到具体的化石保存,提供了新的解释工具.
相关概念视频
02:56The Fossil Record
25.3K
The fossil record documents only a small fraction of all organisms that have ever inhabited Earth. Fossilization is a rare process, and most organisms never become fossils. Moreover, the fossil record only exhibits fossils that have been discovered. Nevertheless, sedimentary rock fossils of long-lived, abundant, hard-bodied organisms dominate the fossil record. These fossils offer valuable information, such as an organism's physical form, behavior, and age. Studying the fossil record helps...
25.3K
02:51Multi-species Conserved Sequences
4.0K
Next-generation sequencing technologies have created large genomic databases of a variety of animals and plants. Ever since the human genome project was completed, scientists studied the genome of primates, mammals, and other phylogenetically distant living beings. Such large-scale studies have provided new insights into the evolutionary relationship between organisms.
Although the genome of each species varies greatly from each other, a few sequences are highly conserved. Such conserved...
Although the genome of each species varies greatly from each other, a few sequences are highly conserved. Such conserved...
4.0K
01:27Diversity of Protists III
47
Rhizaria are a diverse group of unicellular protists characterized by their threadlike cytoplasmic extensions known as pseudopodia. These structures aid in both locomotion and feeding, giving Rhizaria an amoeboid appearance. Their amoeboid morphology once led to taxonomic confusion, but molecular phylogenetics has clarified their evolutionary placement and emphasized their shared use of pseudopodia despite divergent lineages.This clade comprises diverse lineages such as Chlorarachniophyta,...
47
02:26Conservation of Protein Domains
3.1K
3.1K
02:55The Evidence for Evolution
42.9K
Genetic variations accumulating within populations over generations give rise to biological evolution. Evolutionary changes can result in the formation of novel varieties and entire new species. These changes are responsible for the diverse forms of life inhabiting the planet. The evidence for evolution suggests that all living organisms descended from common ancestors.
42.9K
01:27Cell Inclusions
40
Prokaryotic cells possess a variety of inclusions that play crucial roles in nutrient storage, metabolic processes, and environmental adaptation. These structures enable bacteria to thrive under fluctuating environmental conditions by storing essential resources and optimizing their metabolic efficiency.Carbon Storage: Poly-β-Hydroxybutyric Acid and Glycogen GranulesBacteria frequently store excess carbon in specialized granules. Poly-β-hydroxybutyric acid (PHB) granules are lipid...
40