All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity. Location: Sentinel Butte Formation, N. 72 x 83 x 14mm (2.83 x 3.27 x 0.55 inches). Ginkgo tree fossil remains are known as living fossils , this means that the fossil specimens are visually indistinguishable from species still present today! […]