Precambrian Era, Paleozoic Era, Mesozoic Era, Cenozoic Era
The Precambrian.
Eons are the largest divisions of geologic time.
Periods
eras
These are put in order of older to newer. Precambrian, Paleozoic, Mesozoic, Cenozoic.
The information the geologic scale provides is animals and fossils over time and periods. Major divisions of time is called eras.
I have never heard of it- i think you mean the Paleozoic Era, which is one of the four main divisions of geological time, and it spanned from 545-250 mya (million years ago). Glad to help! :D
Eon - Phanerozoic (most distant) Era - Cenozoic Period - Quaternary Epoch - Holocene (most recent)
Chronostratigraphic divisions of the geologic timescale are in units of geological material, while geochronologic divisions are periods of time. It is important to make this distinction because while you can visit a deposit of fossils from a certain time period (the geological material; chronostratigraphy), you can visit the actual time period (geochronology).
Cenozoic Mesozoic Paleozoic Precambrian
Precambrian Cambrian
Eras are based one the worldwide changes in types of fossils. Periods are based on types of life worldwide. The Cenozoic era is the geological time scale is divided into both periods and epoch.