Ginkgo sp.
Leaf
Late Cretaceous
Hell Creek Formation
Fallon County, Montana, USA

65mm leaf on 102mm slab. First we have ever seen from this site.

The fossil ginkgo leaves on the market today are mostly the Paleocene ones from North Dakota, but sometimes, ginkgos are found at Cretaceous sites as is the case with this specimen.

The earliest known trees of the Order Ginkgoales appear in the fossil record in the Early Jurassic.