A geologic series, or simply series, is a chronostratigraphic unit of geologic time more commonly referred to as an "epoch" or "geologic epoch", its geochronologic name equivalent. Please refer to Geologic epoch or Geologic time scale for more information.
|Rank of Time Unit||Chronostratigraphic Name||Geochronologic Name|
|1 - Longest||Eonothem||Eon|
|5 - Shortest||Stage||Age|