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Cover news reporter Liu Kesheng
At 10:00 a.m. on December 23, several men were tinkering around the dinosaur fossils just discovered on the 21st, in Wang Ashan, Dashanpu Town, Da'an District, Zigong City. This is the excavation site of dinosaur fossils, and the fossils of this sauropod will be taken out today and sent to the Dinosaur Museum.
At the excavation site, Peng Guangzhao, member of the National Expert Committee on Paleontological Fossils and researcher of the Zigong Dinosaur Museum, and Jiang Shan, deputy director of the Research Department of the Zigong Dinosaur Museum, together with the excavators, carefully carried out the excavation work.
"First, the soil around the fossils should be cleaned up, and then the rocks next to them should be stripped from the fossils with an electric pickaxe, exposing the fossils as much as possible, and finally the small surrounding rocks should be cleaned up with tools to remove the fossils." Peng Guangzhao introduced.
According to reports, the difficulty of this excavation has two aspects. "One is that the rock has a high hardness, and the excavation is relatively wasted, and the other is the location of preservation, and the fossil is vertically inside the rock, which is very rare in the history of dinosaur fossil excavation in Zigong." Fossils are usually transverse, thus making excavations more difficult, and excavations need to be done with more care so as not to destroy the fossils. ”
During the excavation, the overall shape of the fossil was gradually revealed. As of 5:30 p.m., most of the silhouette had been revealed. Peng Guangzhao and other experts carefully investigated and determined that the fossil was a sauropod dinosaur limb bone skeleton fossil" and a "large sauropod dinosaur". "It is certain that the femur of the sauropod dinosaur is 1.1 meters long, which is relatively stout, according to which the body length of this dinosaur is estimated to be about 15 meters."
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