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From the first growth of the tree, many a limb and branch has decayed and dropped off, and these lost branches of various sizes may represent those whole orders, families, and genera which have now no living representatives, and which are known to us only from having been found in a fossil state . The theory of evolution, formalized by Charles Darwin, is as much theory as is the theory of gravity, or the theory of relativity.
As buds give rise by growth to fresh buds, and these, if vigorous, branch out and overtop on all a feebler branch, so by generation I believe it has been with the Tree of Life, which fills with its dead and broken branches the crust of the earth, and covers the surface with its ever branching and beautiful ramifications" (Darwin, 1859).
However, evolution is the binding force of all biological research. In paleontology, evolution gives workers a powerful way to organize the remains of past life and better understand the one history of life.
The history of thought about evolution in general and paleontological contributions specifically are often useful to the workers of today.
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