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323 – 299 MA

Subperiod · Carboniferous

Pennsylvanian

323–299 Ma

The Pennsylvanian is a subperiod within the Carboniferous, spanning roughly 323 to 299 million years ago.

Ranksubperiod· Paleobiology Database
Base323 Ma· Paleobiology Database
Top299 Ma· Paleobiology Database
Duration24.3 Myr· Paleobiology Database
ChartICS International Chronostratigraphic Chart v2023/09 (ages from Macrostrat/PBDB interval tables)

Contains

Formations

Part of

Elsewhere

Cite this article

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

BibTeX · CSL-JSON

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

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Sources for this article: Stratum editorial (Stratum editorial);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:pennsylvanian.

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