The Ordovican period was in the Paleozoic era, and occurred between 488.3 million years ago and 443.7 million years ago.
ordovican period
n
the Jurassic Period
Period.
Cenezoic
A period.
period.
The order of the geologic time intervals is Eon, Era, Period, Epoch.
Geraghty Period
We are living in the Holocene Epoch of the Quaternary Period in the Cenozoic Era of geologic time.
epochs
Mesozoic