The largest division of geological time is called an eon. Eons are subdivided into eras, which are further divided into periods, epochs, and ages.
Eon
Cenozoic Mesozoic Paleozoic Precambrian
The third largest division of geologic time is an era. The eras are further divided into periods, epochs, and ages.
The largest divisions of time on the geological time scale are eons, which are the longest units of time and are further divided into eras. The current eon, the Phanerozoic Eon, is divided into three eras: Paleozoic, Mesozoic, and Cenozoic. Each era is further subdivided into periods, epochs, and ages.
The largest division of geological time is called an eon. Eons are subdivided into eras, which are further divided into periods, epochs, and ages.
The Phanerozoic Eon is the longest division of geological time, spanning approximately the last 541 million years and continuing to the present day. It is further divided into three eras: the Paleozoic, Mesozoic, and Cenozoic eras.
The Precambrian.
Eon
Cenozoic Mesozoic Paleozoic Precambrian
The geological division of time is as follows (from largest to smallest): Eon, Era, Period, Epoch, Age. The "normal" divisions of time in use take the form: Year, Month, Week, Day, Hour, Minute, Second.
The third largest division of geologic time is an era. The eras are further divided into periods, epochs, and ages.
Eon
The largest divisions of time on the geological time scale are eons, which are the longest units of time and are further divided into eras. The current eon, the Phanerozoic Eon, is divided into three eras: Paleozoic, Mesozoic, and Cenozoic. Each era is further subdivided into periods, epochs, and ages.
The longest in geological time is an Eon eg. Archeozoic Eon . Edit: there is also the supereon, which is usually composed of 2-3 eons.
Lloyd H. Woosley has written: 'Program and activities of the Kentucky District Water Resources Division, U.S. Geological Survey' -- subject(s): Geological Survey (U.S.)., Geological Survey (U.S.). Water Resources Division. Kentucky District, Water quality, Water-supply 'Programs and activities of the Kentucky District Water Resources Division, U.S. Geological Survey' -- subject(s): Geological Survey (U.S.)., Geological Survey (U.S.). Water Resources Division. Kentucky District, Water quality, Water-supply
an era uhm NO ^ an eon . (apex)