BIOL 102 Lecture Notes - Lecture 6: Georges Cuvier, Tiktaalik, Comparative Anatomy
Document Summary
Bio 102 lecture 6 / evidence for evolution and life on earth. 1. fossils: biogeography, comparative anatomy, comparative embryology - - similarities between human and reptile embryos, molecular biology. What kinds of info do we get form the fossil record: where the fossils are found. Georges cuvier: one of the rst to realize that fossilized remains were evidence of extinct organisms, father of paleontology , theory of cataclysms (mass extinctions, noticed similarities in progressions of ancestors indian elephant and mammoth. Fossil: the preserved remains or impressions once living organisms. Fossil record: an assemblage of fossils arranged in order of age which provides evidence of changes in species over time. Typically when an organism dies it is eaten and broken down by things like light, changes of temp. , or microbes. Organisms that become fossils become covered encased in certain types of sediment, freezing, imprinting, mineralization, or something like amber. Some fossils found, especially those frozen, still have dna in tact.
