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en.wikipedia.org/wiki/Geologic_time_scale

The geologic time scale (GTS) is a system of chronological dating that relates geological strata (stratigraphy) to time, and is used by geologists, paleontologists,  ...

www.ucmp.berkeley.edu/help/timeform.php

Online exhibits. Geologic time scale. Take a journey back through the history of the Earth — jump to a specific time period using the time scale below and ...

www.fossils-facts-and-finds.com/geologic-time.html

In the early 1800's a system for naming geologic time periods was devised using four periods of geologic time. They were named using Latin root words, Primary ...

geology.com/time.htm

Printable Geologic Time Scale - Geologcial Time Line from Geology.com.

hyperphysics.phy-astr.gsu.edu/hbase/Geophys/geotime.html

The vast expanse of geological time has been separated into eras, periods, and epochs. The numbers included below refer to the beginnings of the division in ...

www.mcz.harvard.edu/Departments/InvertPaleo/Trenton/Intro/GeologyPage/Geologic%20Setting/geologictime.htm

The Modern Geologic Time Scale, as shown above, documents intervals of geologic time relative to one another, and has been continuously developed and  ...

www.infoplease.com/science-health/physical-science/table-geological-periods

The known geological history of Earth since the Precambrian Time is subdivided into three eras, each of which includes a number of periods. They, in turn, are ...

www.enchantedlearning.com/subjects/Geologictime.html

Geologic time chart of major biological and geological eras, with the pivotal events, eons, eras, periods and epochs.

study.com/academy/lesson/geologic-time-scale-major-eons-eras-periods-and-epochs.html

The geologic time scale is an essential tool for understanding the history of Earth and the evolution of life. In this lesson, explore the...

www.geosociety.org/science/timescale

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