What defines an era?
(Entry 1 of 2) 1a : a fixed point in time from which a series of years is reckoned.
b : a memorable or important date or event especially : one that begins a new period in the history of a person or thing.
2 : a system of chronological notation computed from a given date as basis..
How many types of era are there?
There are currently three eras defined in the Phanerozoic; the following table lists them from youngest to oldest (BP is an abbreviation for “before present”)….Geological era.EraBeginning (millions of years BP)End (millions of years BP)Cenozoic66.038N/AMesozoic252.1766.038Paleozoic542252.17
What is another word for ERA?
Some common synonyms of era are age, epoch, and period.
What are some examples of era?
The definition of an era is a period of time in history that is unified by cultural or historical factors. An example of an era is the industrial era. An event or date that marks the beginning of a new or important period in the history of something.
How many years are there in an Era?
An era in geology is a time of several hundred million years. It describes a long series of rock strata which geologists decide should be given a name. An example is the Mesozoic era, when dinosaurs lived on the Earth. An era is made up of periods, and several eras make up an eon.
What is the era we live in today?
CenozoicOur current era is the Cenozoic, which is itself broken down into three periods. We live in the most recent period, the Quaternary, which is then broken down into two epochs: the current Holocene, and the previous Pleistocene, which ended 11,700 years ago.