The oldest vertebrate, the Yunnan Ozoan, has been confirmed to have lived 518 million years ago.
Confirm “Yunnan Oso An” – Xinhua Reported that the Chinese team of paleontologists used advanced experimental techniques to confirm that “Yunnan Ozoan” (yunnanozoans) The mysterious fish-like creature that lived 518 million years ago is the world’s oldest vertebrate.
Recommended news
Chengjiang Fauna, a Cambrian fossil site in Yunnan Province. southwest of china Preserve a large number of vertebrate ancestors. Scientists hope to solve the mystery of the vertebrate origin by studying the fossil site.
Using advanced experimental techniques, Chinese paleontologists have confirmed that the yunnanozoans, mysterious fishlike forms which lived 518 million years ago, were the oldest vertebrates on earth. /cgtn/
Researchers from the Nanjing Institute of Geology and Paleontology Under the Chinese Academy of Sciences The Yunnan Ozoan sample from Chengjiang Fauna was examined with previously unused techniques such as X-ray microtomography. Scanning and transmission electron microscopy and elemental mapping using distributed energy spectrometry techniques.
The examination revealed that the structure Yunnan Ozoan’s “gill bone” It consists of cartilage cells that contain extracellular compounds that are filled with microfibrils. which is a characteristic of vertebrates
Mr. Zhao Fangchen Researcher at Nanjing Institute of Geology and Paleontology It states that several primitive features of the Yunnan Ozoan may provide important in-depth evolutionary information. which can solve the mystery of the origin of vertebrates
The stem vertebrate yunnanozoan. Credit: Fangchen Zhao
Artistic reconstruction of the yunnanozoan from the Cambrian Chengjiang biota shows basket-like pharyngeal skeletons. Credit: Dinghua Yang
Yunnanozoans are extinct creatures from the early Cambrian period, about 518 million years ago. They look like worms, with a length of about 3-4 centimeters. Scientists recently have discovered evidence that yunnanozoans are the oldest known stem vertebrates. Stem vertebrate refers to those vertebrates that are extinct, but very closely related to living vertebrates. /cgtn/
Aerial photo taken on Oct. 13, 2021 shows a museum of Chengjiang Fossil site in Chengjiang County, southwest China’s Yunnan Province. The Chengjiang Fossil site presents the most complete record of an early Cambrian marine community. (Xinhua/Chen Xinbo)
Related news: