Paleozoic Era :)
The Mixedwood Plains ecozone was formed during the Quaternary Period, which is part of the Cenozoic Era, around 12,000 years ago during the last ice age.
an era is a very long span of geologic time
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.
Currently we are in the Cenozoic era.
Currently we are in the Cenozoic era.
Cenozoic
The Cenozoic.
The Mesozoic Era.
is the cenozoic era the most modest of all
Era
Cenozoic
It is the final period of the Mesozoic era.