The new fossils provide evidence of early animal evolution

(left), relics (right) and fossil restoration (centre)
symmetry, sections, movement ... These features have become "standard" for most modern animals. However, 550 million years ago, these features were first "assembled" on animal bodies at the same time. An early life research team at the Nanjing Institute of Geology and Paleontology of the Chinese Academy of Sciences found in the Edikara chronicle formation in the Three Gorges region that a strange worm sleeps on its way, with symmetrical sectional patterns on both sides and the final line remaining on the bottom of the Edikara era at the same time. The findings provide important evidence for exploring early animal evolution, the results of which were published in Nature on September 4.
the symmetry and sectional phenomena on both sides of the body is an extremely important event in the history of animal evolution. The emergence of sections means that the structure of the body has partitions and functional division of labor. But when did these complex animals appear? Since Darwin, the issue has been the focus of attention of palaeontologists and evolutionary biologists.
"Cambusda outbreak" in the emergence of a large number of triletes as the representative of the two sides of the symmetrical animals, therefore, Camdhan is often referred to as the "trilete era." It has long been speculated that they should have had more ancient ancestors in the pre-Cambalin era (known in China as the Zhendan period, 630 to 540 million years ago), but no reliable fossil evidence has been found.
In 2013, Chen Zhe, Zhou Chuanming, Yuan Tingli and Xiao Shuhai, professors at Virginia Tech University, discovered a specially preserved new type of animal fossil in a formation about 550 million years ago in China's Three Gorges region. The fossil recreates the "last moments" of a traveling worm, the animal's remains and its final trailing marks (marks) remain on a rock. This new fossil evidence suggests that symmetrical after-birth animals with motor ability and body sections have emerged in the Edikara era.
researchers named yiling insect "Yiling worm" in Yichang City, Hubei Province. Yiling worm body is a long bar, symmetrical on both sides, triloyte-shaped, with obvious body sections, but also has the difference between front and rear and back. "This is a completely new type of animal fossil that has not been found in geological history or modern times, and we speculate that it may be a link animal or arthropod." Chen said.
traditional Edikara biome was once thought of as a biome with no real division of the body, a lack of athletic ability, and an evolutionary blind end. "Yiling worm is the only symmetrical animal found before the Campell period, with motor ability and the ability to form continuous remains." Chen Zhe pointed out that the discovery of yiling worm provides direct fossil evidence for the appearance of symmetrical animal body sections on both sides in the Edikala period, and also provides important evidence for the explorers who explored many fossils of relics during this period. (Source: Shen Chunlei Chen Xiaozheng, China Science Journal
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