Integrated ceiling Research personnel separated fossils, stratigraphic analysis and geological data to conclude that the shark tooth mountain bone layer was not formed within 15.9 million to 15.2 million years. The researchers said that during this 700,000-year period, the Earth's temperature significantly increased, causing sea levels to rise. Large quantities of fossils were formed near the coastline at that time. Due to the rising sea level, these fossils were buried underground, forming the current bone layer.
The shark tooth mountain bone layer is located in the northern part of California's Central Valley in the United States, covering an area of approximately 100 square kilometers with a thickness ranging from 10 cm to 50 cm. It includes fossils of many large prehistoric marine organisms, such as shark teeth the size of human hands, 4-meter-long seal skeleton fossils, and extinct ancient whale fossils.
According to Xinhua News Agency in Los Angeles on June 8th, American and Canadian researchers announced on the evening of the 8th that they have uncovered the formation mystery of the world's largest prehistoric marine organism burial site - the shark tooth mountain bone layer in the United States. The researchers hope that their new study will draw more attention to the shark tooth mountain bone layer.
Nick Pyenson from the University of British Columbia in Canada and some archaeologists from American universities published a paper in the journal "Geology" saying that the formation of the shark tooth mountain bone layer was not due to catastrophic events. These bone fossils accumulated naturally from marine life deaths, just that this accumulation lasted for 700,000 years.