Why is Cyclobalanopsis called the hometown of mammoths?

There are many fossils. Since 1958, the first mammoth incisor fossil was unearthed in Cui Shi, Liuhe Town, followed by Quaternary paleontological fossils in Qinggang County. According to statistics, Cyclobalanopsis glauca unearthed 4800-5000 fossils every year, and the total number of various fossils unearthed reached more than100000, so it was called the hometown of mammoths.