Quantum redactiones paginae "Oligocaenum" differant

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== Notae ==
<references/>
 
== Nexus externi ==
* "[http://www.stratigraphy.org/bak/geowhen/stages/Oligocene.html Oligocene Epoch]" apud [[Commissio stratigraphica internationalis|Commissionem stratigraphicam internationalem]]
 
{{stipula}}