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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.geosociety.org/science/timescale

Note that the compilers are still accepting comments on the overall content of time scale. Offer your comments or join in the discussion on GSA's Facebook page.

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 ...

pubs.usgs.gov/fs/2007/3015

Effective communication in the geosciences requires consistent uses of stratigraphic nomenclature, especially divisions of geologic time. A geologic time scale is ...

geology.com/time.htm

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

geomaps.wr.usgs.gov/parks/gtime

Apr 25, 2017 ... What is Geologic Time? Concealed within the rocks that make up the Earth's crust lies evidence of over 4.5 billion years of time. The written ...

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.stratigraphy.org/index.php/ics-chart-timescale

Chart. Click here (PDF or JPG) to download the latest version (v2017/02) of the International Chronostratigraphic Chart. The explanatory article was published in  ...

www.enchantedlearning.com/subjects/Geologictime.html

Geologic time chart of major biological and geological eras, with the pivotal events, ... The first geologic time scale was proposed in 1913 by the British geologist ...

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

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