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27.3 – 23 MA

Age · Oligocene

Chattian

27.3–23 Ma

The Chattian is an age within the Oligocene, spanning roughly 27.3 to 23 million years ago.

Rankage· Macrostrat
Base27.3 Ma· Macrostrat
Top23 Ma· Macrostrat
Duration4.26 Myr· Macrostrat
ChartICS International Chronostratigraphic Chart v2023/09 (ages from Macrostrat/PBDB interval tables)

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Cite this article

Stratum Strata. "Chattian" (Time interval). Stratum Strata pack 2026.09, as of 2026-09-21. https://stratum.black/strata/time/chattian. Accessed 2026-09-21.

BibTeX · CSL-JSON

@misc{stratum-chattian,
  title        = {Chattian},
  author       = {{Stratum Strata}},
  howpublished = {\url{https://stratum.black/strata/time/chattian}},
  year         = {2026},
  note         = {Time interval article, Stratum Strata pack 2026.09, as of 2026-09-21; sources: stratum, macrostrat, pbdb. Accessed 2026-09-21.}
}

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Sources for this article: Stratum editorial (Stratum editorial);Macrostrat (CC-BY-4.0);Paleobiology Database (CC-BY-4.0). As of 2026-09-21; Strata pack 2026.09. Data reproduced under the licences shown; text in Stratum's own words unless a section names its source.

Found an error? Write to drew@tyr.ac with the article id interval:chattian.

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