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・ Geok Tepe
・ Geokaun
・ Geokichla
・ Geokinetics
・ Geokrety
・ Geolabididae
・ Geoland Pantophlet
・ GeoLearning
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・ GEOLibrary
・ Geolocation
・ Geolocation Privacy and Surveillance Act
・ Geolocation software
・ Geolocator
・ Geolog Stadium
Geologic Calendar
・ Geologic hazards
・ Geologic map
・ Geologic map of Georgia (U.S. state)
・ Geologic modelling
・ Geologic overpressure
・ Geologic preliminary investigation
・ Geologic province
・ Geologic record
・ Geologic temperature record
・ Geologic time scale
・ Geologic timeline
・ Geologic timeline of Western North America
・ Geologica Acta
・ Geological and Mining Institute of Spain


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Geologic Calendar : ウィキペディア英語版
Geologic Calendar
The Geologic Calendar is a scale in which the geological lifetime of the earth is mapped onto a calendrical year; that is to say, the ''day one'' of the earth took place on a geologic January 1 at precisely midnight, and today's date and time is December 31 at midnight. On this calendar, the inferred appearance of the first living single-celled organisms, prokaryotes, occurred on a geologic February 25 around 12:30pm to 1:07pm, dinosaurs first appeared on December 13, the first flower plants on December 22 and the first primates on December 28 at about 9:43pm. The first Anatomically modern humans did not arrive until around 11:48 p.m. on New Year's Eve, and all of human history since the end of the last ice-age occurred in the last 82.2 seconds before midnight of the new year.
==See also==

*Cosmic Calendar
*Calendar

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Geologic Calendar」の詳細全文を読む



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