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hubbelli had similar tooth shapes with varying degrees of serrations suggesting a clear evolutionary path from early mako sharks
was discovered with a similar tooth shape
Araucaria could be found in great abundance across the world along with other gymnosperms and ferns
37" in length
Fossil Ginkgo Leaf - 2.938" quartz hubbelli had similar tooth shapesThe 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. 938" fossil Ginkgo cranei leaf from the Sentinel Butte Formation in North Dakota. This formation and the fossil are from the
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