EPSC 233 Lecture Notes - Lecture 7: Molecular Phylogenetics, Animal, Hominidae
6 Nov 2018
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Document Summary
Index fossils: good for dating rocks that are difficult to be dated. It"s rare for living creatures to be preserved. Signor-lipps effect: the taxon existed prior to the first appearance of the fossil in the sedimentary record, and endured beyond its last appearance. Taxonomy: identification, description and nomenclature or organisms and fossils. Ontogeny: looking at full development of animals throughout their lives. Phylogeny: origin and evolution of fossils or a set of organisms. Cladistics is the classification of organisms by their evolutionary relationship rather than their morphology. Automorphy:: derived traits that are not shared among different taxa. Molecular phylogeny has redrawn the tree of life. Evolution isn"t a theory, it is something we have observed. Led to the theory to explain evolution: natural selection. Fauna in the america"s was different compared to africa and europe. Marine species were different on either side of the isthmus of panama.
