Fossil Ginkgo Leaf - 3.862" morecoolthings "The observed instances of periosteal

"The observed instances of periosteal reactive bone and healing fractures are consistent with such non-random trauma

This specimen is a piece of Darwin glass

It is one of the oldest sources of stromatolites on Earth at around 3

Like other gemstones

50" nodule of Fairburn Agate from the Minnelusa Formation in South Dakota

Fossil Ginkgo Leaf - 3.862" morecoolthings "The observed instances of periostealThe 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 3. 862" fossil Ginkgo cranei leaf from the Sentinel Butte Formation in North Dakota. This formation and the fossil are from the