Earth's History

Earth's History and Principles of Stratigraphy

Earth's History and Index Fossils

ESRT Page 8 - Geologic Time Scale

ESRT Page 9 - Geologic Time Scale

ESRT Page 1 and NYS Fossil

Using ESRT Pages 2,3,8,9 Together

Radioactive Decay

ESRT Page 1 - Radioactive Decay Chart