Oligocene
preferred label: الیگوسن @fa
type: Concept
related: upper Paleogene

Eocene
preferred label: ائوسن @fa
type: Concept
related: upper Paleogene

upper Paleogene
related: Eocene
related: Oligocene
broader: paleogene
preferred label: پالئوژن فوقانی @fa
type: Concept

paleogene
preferred label: پالئوژن @fa
type: Concept
narrower: upper Paleogene