A Last Interglacial Estuarine Deposit at Largs, New South Wales, Australia

A Last Interglacial Estuarine Deposit at Largs, New South Wales, Australia

British Geological Survey - The Geological Time Scale

Detailed interactive geological time scale outlining earth"s major eras and stratigraphic layers.

British Geological Survey Time Scale

Official geological timechart and stratigraphy information.

Escala de tiempo geológico

Escala de tiempo geológico

Geologic Time

discussion of how geoscientists determine age of rocks on the earth

Geology.com - Geologic Time Scale

Informational overview of the Earth"s history, eras, and major geological extinction events.

International Commission on Stratigraphy

Official global standard for the geological time scale, defining eras, periods, and geochronology.

International Commission on Stratigraphy

International standard for geological time scale and eras.

Timelines and Scales of Measurement

Timelines and Scales of Measurement

UCMP Berkeley - Geologic Time Scale

Comprehensive educational resource on the geological eras, periods, and evolutionary history of Earth.

US Geological Survey - Geologic Time Scale

Official publication and chart detailing the division of geological time into eras and epochs.