Editor's note: In the middle of Colorful Yunnan, there is a plateau lake known as "Liuli Wanqing", which is Fuxian Lake. Its north shore is the world-famous Chengjiang Fossil Land, which is the first fossil world natural heritage in China and the only fossil in Asia, an important empirical evidence of the Cambrian explosion of life, and an important site for the evolution of life in the early days of the earth, known as "one of the most amazing scientific discoveries of the 20th century". Since the discovery of the Chengjiang Biological Fossil Group on July 1, 1984, 20 phyla, more than 280 species of Cambrian rare animal and plant fossils have been discovered, and 80% belong to new species, and almost all the ancestors of the living animal phyla can be found here, and are praised by the international scientific community as "paleontological sacred places". On July 1, 2012, the Chengjiang Fossil Site was inscribed on the World Heritage List. The discovery and research of the Chengjiang biological fossil group is an important milestone in the history of world paleontology. "Learning to strengthen the country" Yunnan learning platform will successively launch the "Science Popularization Yunnan - Fossil Notes" series of manuscripts, so stay tuned.
Today I want to take you to understand the multi-section spike worm.
Multi-segmented pinnacle, multi-segmented pinnacle is a single species and is an extremely rare species. The insect is small, slender, and about 2 cm long. The head is short, sub-oval, with 1 pair of lateral eyes, located on the anterior edge of the cephaloma. The peduncle of the protocephalic leg is thick and long, consisting of 2 segments. A knee-like curved joint between the stalk and the claw. The claws consist of 4 short crayons, each with a short spine-like protrusion. The mouth is located near the anterior edge of the head, connected to the midgut by a short neck area, and is followed by 3 pairs of bilimb attachments. The torso consists of 22 dorsal carapaces, each with 1 pair of bilimb-shaped appendages corresponding to it. The tail spines are slender, and the camp swims near the bottom of the swim lifestyle, which is produced in the Cambrian Hat Tianshan Shale section under the Chengjiang River and Kunming Haikou in Yunnan.
Source: Learning Power Chengjiang Rong Media Center
Editor's Arrangement: Western Mobile Media
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