How did the geographic range of Ginkgo change after the Mesozoic Era?

Following the Mesozoic Era, the geographic range of the ginkgo declined progressively. While fossil evidence from the Jurassic Period indicates that ginkgophytes were once widespread across diverse regions—including Australia, western North America, Mongolia, Alaska, England, and central Europe—their distribution shrank significantly over time. Today, some botanists believe that remote areas of southeastern China serve as the last natural home for the only surviving member of the division, Ginkgo biloba.1