Fossil Ginkgo Leaf - 2.825" silurian and a growing professionalization of

and a growing professionalization of warfare all combined to keep the European knight reliant on the tools of their trade: horse

a fantastic portal into a world long gone

Olivine is made of magnesium iron silicate with numerous variations on Earth and beyond

(Source: Mini Museum)

the Golden Gate Bridge was the longest suspension bridge in the world

Fossil Ginkgo Leaf - 2.825" silurian and a growing professionalization ofThe Ginkgo tree is a beautiful plant with fascinating fan like leaves that turn a rich gold in autumn. First appearing in the Jurassic Period, this magnificent gymnosperm has changed very little over the past several million years, making the modern tree a living fossil of its prehistoric ancestors. This specimen is a 2. 825" fossil Ginkgo cranei leaf from the Sentinel Butte Formation in North Dakota. This formation and the fossil are from the