Study Notes on Evolutionary Theory

Major Contributors to Evolutionary Theory

  • Aristotle (384-322 BCE): Stated species are immutable and cannot change.

  • Georges Cuvier (1769-1832): Paleontologist known for Catastrophism; species do not change over time and fossils indicate mass extinctions.

  • Charles Lyell (1797-1875): Developed Uniformitarianism; geological changes are gradual.

  • Lamarck (1744-1829): Proposed early theory of evolution; believed in use/disuse and inheritance of acquired characteristics.

  • Carl Linnaeus (1707-1778): Suggested life evolved over time, aligning with family lineage.

  • Erasmus Darwin (1731-1802): Suggested common origin of life but couldn't explain mechanisms.

  • Buffon (1707-1788): Noted anatomical features serving no purpose; believed species changed over time.

Key Concepts

  • Fossils: Preserved remains in sediment; provide evidence of historical life forms.

    • Formation involves quick burial by sediment, lack of oxygen, and mineralization.

  • Evolution: All species evolve over time and adapt to their environments.

Darwin's Contributions

  • Charles Darwin (1809-1882): Developed the theory of natural selection; observed similarities between fossils and living species during the HMS Beagle voyage.

  • Key observations included:

    • Fossils resembling living species found at corresponding locations.

    • Fossils of marine organisms in mountainous areas support Earth's gradual change.