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Early Ideas about Evolution . Early Ideas about Evolution. Aristotle (384-332BC) Theory of Spontaneous Generation : Organisms could originate from non-living matter. Flooding of the Nile river left muddy soil followed by an emergence of frogs. Conclusion: Frogs come from muddy soil.
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Early Ideas about Evolution... • Aristotle (384-332BC) • Theory of Spontaneous Generation: Organisms could originate from non-living matter. • Flooding of the Nile river left muddy soil followed by an emergence of frogs. • Conclusion: Frogs come from muddy soil.
Early Ideas about Evolution... • George Cuvier (1769-1832), paleontologist • Theory of Catastrophism: Global catastrophies caused widespread extinctions. New species would be ‘created’ to replace the old species.
Early Ideas about Evolution... • Sir Charles Lyell(1797-1875) • Principles of Uniformitarianism (1830). The Earth’s surface has always changed and continues to change through similar, uniform, and very gradual processes. • Based his theories on fossil deposits. • First beliefs that the Earth was extremely old.