All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity. Location: Sentinel Butte Formation, N. 132 x 99 x 12mm (5.2 x 3.9 x 0.47 inches). Ginkgo tree fossil remains are known as living fossils , this means that the fossil specimens are visually indistinguishable from species still present today! […]