The Changing Earth |
The Earth's Crust |
Faults and Folds |
Mountain Building |
Precambrian to Devonian Periods |
Carboniferous to Permian Periods |
Triassic Period |
Jurassic Period |
Cretaceous Period |
Tertiary Period |
Quaternary Period |
Early signs of Life |
Amphibians and Reptiles |
The Dinosaurs |
Theropods |
Sauropodomorphs |
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