甲纪皇冠雄性揭示了现代血统的兴起
Qiong Wu1, Alexander G Radchenko2, Michael S Engel3,4,5
1College of Life Sciences, Capital Normal University, Beijing 100048, China.
Zoological research
|July 31, 2024
概括
在9900万年前的珀中发现的一种新的化石,Antiquiformica alata,将王冠的起源推回到白纪早期. 这一发现修订了我们对进化和多样化的理解.
科学领域:
- 古生物学的古生物学
- 进化生物学 进化生物学
- 昆虫学 昆虫学是一门学科.
背景情况:
- 中世主要代表已灭绝的干群.
- 以前,最早的王冠可以追溯到图隆纪 (白纪晚期,约94-90万年前).
- 美国,哈萨克斯坦和博茨瓦纳的化石发现确定了以前的时间表.
研究的目的:
- 根据新的化石证据,重新评估多样化的时间表.
- 为了确定一个新发现的化石的遗传位置.
- 了解甲科亚家族的早期演变.
主要方法:
- 考古学分析来自卡珀的化石雄性.
- 形态特征,包括天线和翅膀.
- 福里埃变换红外光谱法 (FTIR) 来确认珀的起源.
主要成果:
- 发现Antiquiformica alata,一个来自最早的Cenomanian (~99 Ma) 的alate雄性.
- 独特的形态特征使Antiquiformica与已知的雄性干区别开来.
- 基于其独特的特征,分析将Antiquiformica置于现存的小家族Formicinae中.
结论:
- 在最早的Cenomanian珀中发现的Antiquiformica alata表明Formicinae在白纪晚期开始时出现.
- 皇冠可能起源于更早的时期,可能是在最早的白或罗纪晚期.
- 这一发现显著修订了已知的的进化历史,特别是Formicinae.
相关概念视频
02:56The Fossil Record
25.1K
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...
25.1K
02:16Genetics of Speciation
19.2K
Speciation is the evolutionary process resulting in the formation of new, distinct species—groups of reproductively isolated populations.
19.2K
01:23Phylogeny
43.8K
Phylogeny is concerned with the evolutionary diversification of organisms or groups of organisms. A group of organisms with a name is called a taxon (singular). Taxa (plural) can span different levels of the evolutionary hierarchy. For instance, the group containing all birds is a taxon (comprising the class Aves), and the group of all species of daisies (the genus Bellis) is a taxon. Phylogenies can likewise include just one genus (i.e., depict species relationships) or span an entire kingdom.
43.8K
01:54Convergent Evolution
27.7K
Evolution shapes the features of organisms over time, ensuring that they are suited for the environments in which they live. Sometimes, selection pressure leads to the rise of similar but unrelated adaptations in organisms with no recent common ancestors, a process known as convergent evolution.
27.7K
02:31Synteny and Evolution
3.2K
John H. Renwick first coined the term “synteny” in 1971, which refers to the genes present on the same chromosomes, even if they are not genetically linked. The species with common ancestry tend to show conserved syntenic regions. Therefore, the concept of synteny is nowadays used to describe the evolutionary relationship between species.
Around 80 million years ago, the human and mice lineages diverged from the common ancestor. During the course of evolution, the ancestral...
Around 80 million years ago, the human and mice lineages diverged from the common ancestor. During the course of evolution, the ancestral...
3.2K
01:24Eukaryotic Evolution
33.2K
The endosymbiont theory is the most widely accepted theory of eukaryotic evolution; however, its progression is still somewhat debated. According to the nucleus-first hypothesis, the ancestral prokaryote first evolved a membrane to enclose DNA and form the nucleus. Conversely, the mitochondria-first hypothesis suggests that the nucleus was formed after endosymbiosis of mitochondria.
Contrary to the endosymbiont theory, the eukaryote-first hypothesis proposes that the simpler prokaryotic and...
Contrary to the endosymbiont theory, the eukaryote-first hypothesis proposes that the simpler prokaryotic and...
33.2K