I. Introduction Phylogeny- the evolutionary history of a species or a group of related species Taxonomy- the science of classifying organisms based on similarities and differences • first done by the Greek philosopher Aristotle more than 2,000 years ago • classified living things as either animals or plants • In the 1700’s, Carolus Linnaeus devised a method of grouping organisms into hierarchical categories.
Binomial Nomenclature- Two-part naming system using an organisms Genus and species names. ex. Canisfamiliarus (K9-Dogs) • Genus is capitalized, species is lower case • If being typed, whole thing italicized, if hand written, underline
All organisms have:Common name – changes from place to placeScientific name – same every where Mountain Lion Puma Cougar Deer tiger Red tiger Catamount Panther Puma concolor
Other reasons to not use common names… • spider monkey • sea monkey • sea horse • gray wolf • firefly • crayfish • mud puppy • horned toad • ringworm • black bear • jellyfish
II. Classification A. Two systems of species classification: 5/6- Kingdom Scheme3- Domain Scheme - Monera(archea/Eu) - Bacteria - Protista - Archaea - Fungi - Eukarya - Plantae - Animalia