BIOL 102 Lecture Notes - Lecture 7: Neil Shubin, Georges Cuvier, Tiktaalik
Document Summary
We will examine five of the many lines of evidence in support of evolution. Lecture 7: the fossil record, biogeography, comparative anatomy, comparative embryology (how embryos develop, molecular biology. Naturalist that specialized in the anatomy of animals. One of the first to realize that fossil remains were evidence of extinct organisms (religiously troubling theory) Paleontologists: study ancient life by means of the fossil record. Fossil: the preserved remains or impressions of once-living organisms. Fossil record: an assemblage of fossils arranged in order of age, which provides evidence of changes in species over time. Not every organism that dies forms a fossil. Organisms are more likely to fossilize if they have a bony skeleton or hard shells. In addition the organism must be preserved quickly upon death or create an imprint in special types of sediment. This is why the fossil record is not complete but has supplied evidence for evolution. Two types of fossils: mineralization- more detail, imprint and mold.
