History for the Relaxed Historian
HISTORY FOR THE RELAXED HISTORIAN

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Timeline Description
Geologic Time Scale 650 Million Years Ago to the Present - How Many Millions of Years Ago, Era, Period, and Events


Illustrating

Late Proterozoic
first skeletal elements, first soft-bodied metazoans, first animal traces

Paleozoic

- Cambrian: first fishes, first chordates

- Ordovician: sudden diversification of metazoan families

- Silurian: first vascular land plants

- Devonian: first amphibians, jawed fishes diversify

- Carboniferous - Pennsylvanian / Mississippian: first reptiles, scale trees, seed ferns

- Permian: major extinctions, reptiles diversify

Mesozoic

- Triassic: first mammals, first dinosaurs

- Jurassic: first birds, dinosaurs diversify

- Cretaceous: extinction of dinosaurs, first primates, first flowering plants

Cenozoic

- Paleogene / Neogene: mammals diversify

- Quaternary: evolution of humans


Credits
© 2010 Encyclopaedia Britannica, Inc.


Related Links
Dawkins' Timeline of Evolution     Map: Origin of the Continents - Pangaea, Laurasia, Gondwanaland


Geologic Time Scale 650 Million Years Ago to the Present - How Many Millions of Years Ago, Era, Period, and Events

 



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© 2016 Emerson Kent