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Transcript 
Evolutionary Events
Challenge: Place these events in their
proper order
Last dinosaurs
Chrictonsaurus
Ankylosaurus
First mammals
Megazostrodon?
First dinosaurs
Eoraptor
Cretaceous-Tertiary extinction event
Photosynthetic bacteria
Chromatium okenii
Bacteria and Archaea split
Helicobacter pylori
(bacteria)
Halobacterium halobium
(archaea)
First Homo
Homo habilis
Seed ferns
Simple animals
Caenorhabitis elegans
First flowering plants
Magnolia sp.
Earliest primates
Ring-tailed lemur--representative
of an early primate lineage
Jawless fish
Lampetra fluviatilis
First multicellular organisms
Microthamnion sp.-- a simple alga
Permian-Triassic extinction event
eliminates 98% of marine species
Simple land plants
Fossils of Cooksonia (found in Ireland)
Insects, Coal age
Simple cells emerge
Hot springs containing Archaea
First arthropods
Opabinia
First bird
Archaeopterix
Accumulation of oxygen, ozone
Cliffs of oxidized iron: Fe3+
Early amphibians
Tyrannosaurus rex appears
Primitive eukaryotes
First sexual reproduction
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