Fossil
1. Fossils are remains of dead organism in the sedimentary rocks.
2. They provide information for evolution. E.g. Archeopteryx, Eohippus.
Living Fossil:
1. Living fossils are living organism on the earth’ this surface.
2. They remain unchanged since million years hence called living fossils, e.g. Sphenodan, Coelocanth fish.
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