Millions of Yrs Ago
Began — Ended
|Major Geological Events||Major Biological Events||Canadian Landforms Created|
|– volcanoes erupted, many cycles of mountain building and erosion||– 1st single-celled organisms
– 1st multi-celled organisms
|– Canadian Shield formed|
|570 245||– periods when large parts of North America were covered by shallow seas||– 1st insects
– Age of Amphibians and Fish
– large swamps
– 1st plants & animals appear on land
|– Appalachian Mountains formed|
|245 66||– shallow seas in interior of North America at times||– Age of Reptiles (dinosaurs)
– 1st flowering plants
– 1st birds and mammals
|– Formation of Rocky Mountains begins
– Innuitian Mountains formed
|66 present||– ice sheets covered much of North America
– continents take on present shape
|– human beings develop
– Age of Mammals
– modern forms of life evolved
|– Formation of Rocky Mountains completed|
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