the Jurassic Period
This period is called holocene.
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.
Penguins first appeared during the Paleocene epoch, which is part of the Cenozoic era in the geologic time scale. This period lasted from about 66 to 56 million years ago.
We live in the Cenozoic era. Currently, we are in the Holocene epoch of the Quaternary period. Humans evolved in the Pleistocene epoch which was also in the Quaternary period.
Period.
Cenezoic
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.
Cryolophosaurus, from the early Jurassic.