short describe of geological era
Answers
Answer:
it is mentioned below.
Explanation:
The Geologic Time Scale is the history of the Earth broken down into spans of time marked by various events. Markers such as the types of species and how they evolved help distinguish one era from another. Four main time spans generally mark the Geologic Time Scale. The first, Precambrian Time, is not an actual era on the scale because of the lack of diversity of life, but the other three are defined eras:
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Answer:
A geologic era is a subdivision of geologic time that divides an eon into smaller units of time. The Phanerozoic Eon is divided into three such time frames: the Paleozoic, Mesozoic, and Cenozoic (meaning "old life", "middle life" and "recent life") that represent the major stages in the macroscopic fossil record.