Eras are divided into periods.
The 3 eras of geologic time is Palezozoic era, Mesozoic era, and Cecozoic era
There are 4 eras, and they are the Hadean, Archean, Proterozoic, and Phanerozoic eras.
The Geologic Time Scale is divided up by four major intervals. In order from Largest to smallest: Eons are the largest time frame covering hundreds of millions of years. Eons are divided into smaller time intervals known as Eras. Eras are subdivided into Periods. Periods are broken into finer subdivisions known as Epochs.
Eras
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Eras are subdivisions of larger units of geologic time called eons.
The 3 eras of geologic time is Palezozoic era, Mesozoic era, and Cecozoic era
An era is a geologic division of time that dates from a particularly significant event. A smaller unit of an era would be a period which is further subdivided into an epoch and then an age.
There are 4 eras, and they are the Hadean, Archean, Proterozoic, and Phanerozoic eras.
The Geologic Time Scale is divided up by four major intervals. In order from Largest to smallest: Eons are the largest time frame covering hundreds of millions of years. Eons are divided into smaller time intervals known as Eras. Eras are subdivided into Periods. Periods are broken into finer subdivisions known as Epochs.
The Geologic Time Scale is divided up by four major intervals. In order from Largest to smallest: Eons are the largest time frame covering hundreds of millions of years. Eons are divided into smaller time intervals known as Eras. Eras are subdivided into Periods. Periods are broken into finer subdivisions known as Epochs.
Eras
Era
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The order of geologic time from smallest to largest is Phanerozoic, Proterozoic, Archean and Hadean (Deep Time). These four periods are called Eons which can be further subdivided into Eras, Periods and Epochs. Most people are more familiar with the periods such as Cambrian, Permian, Triassic, Jurassic and. Cretaceous and many more to numerous to mention. To learn more, Google geologic time scale.
eras and periods
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