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Evolution Events
Dates
13
Biology
Undergraduate 4
02/21/2010
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Term
Archaen
 Definition
origin of life, first bacteria
Term
Proterozoic
 Definition
first Eukaryotes & multicellular organisms
Term
543 MYA
 Definition
Cambrian Explosion
Term
Ordovician
 Definition
first jawless fish & land plants
Term
Silurian
 Definition
first jawed fish
Term
Devonian
 Definition
first amphibians, vascular and woody plants
Term
Carboniferous
 Definition
first reptiles and mammal-like reptiles
Term
Triassic
 Definition
first dinosaurs & mammals
Term
Jurassic
 Definition
first birds
Term
Cretaceous
 Definition
first flowering plants & placental mammals
Term
65 MYA
 Definition
dinorsaurs go extinct here
Term
Oligocene
 Definition
first extensive grasslands
Term
Pliocene
 Definition
first Homo species
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