Cenezoic
No, a geologic era is a longer unit of time than a geologic period. Geologic eras are divided into periods, which are further subdivided into epochs. The hierarchy from largest to smallest is era, period, epoch.
the Jurassic Period
Period.
Cenozoic is not a major period of the geologic time scale. The scale is broken down into eras. Cenozoic, Mesozoic and Paleozoic are all part of the Phanerozic era.
A period is smaller than an era in the geologic time scale. It is further subdivided into epochs and ages.
Geraghty Period
We are living in the Holocene Epoch of the Quaternary Period in the Cenozoic Era of geologic time.
The order of units of geologic time from longest to shortest is: eon, era, period, epoch.
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This period is called holocene.
On the geologic time scale, an era is longer than a period. There are 12 geologic eras in total and they are composed of geologic periods. For instance, the Mesozoic era is composed of the Triassic, Jurassic and Cretaceous periods.
After an era, the next smallest division of time would be an epoch. An epoch is equal to around 10,000,000 years, where as an era is 100,000,000 years.