ARCH 131 Study Guide - Final Guide: Paranthropus, Australopithecus, Prognathism

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Plesiomorphic trait: a primitive trait inherited by a species from their ancestor, ex. Prehensile feet = early primates (had them) miocene apes (had them) living. No tails in humans = primitive apes (didn"t have them) miocene apes (didn"t have them) humans (don"t have them) Apomorphic traits: new or derived" traits, they first appear in the species in question, ex. No tails in primitive apes = early primates (had them) oligocene monkeys (had them) primitive apes (didn"t have them) Evolutionary systematics: when researchers find a fossil they need to check if it"s, just another example of something we"ve already found, a new species, a new genus, evolutionary systematics phylogenetic trees. Phylogeny refers to the actual evolutionary relationships between different organisms. Hominin: the group consisting of modern humans, extinct human species and all our immediate ancestors (including members of the genera homo, australopithecus, paranthropus and. Ardipithecus): basically, every species starting from ardipithecus, from about 6-7 mya.

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