491 – 487 MA

Age

Stage 10

491–487 Ma

The Stage 10 is an age, spanning roughly 491 to 487 million years ago.

Rankage· Macrostrat
Base491 Ma· Macrostrat
Top487 Ma· Macrostrat
Duration4.15 Myr· Macrostrat
ChartICS International Chronostratigraphic Chart v2023/09 (ages from Macrostrat/PBDB interval tables)

Elsewhere

Cite this article

Stratum Study. "Stage 10" (Time interval). Stratum Study pack 2026.09, as of 2026-09-19. https://stratum.black/study/time/stage-10. Accessed 2026-09-20.

@misc{stratum-stage-10,
  title        = {Stage 10},
  author       = {{Stratum Study}},
  howpublished = {\url{https://stratum.black/study/time/stage-10}},
  year         = {2026},
  note         = {Time interval article, Stratum Study pack 2026.09, as of 2026-09-19; sources: stratum, macrostrat, pbdb. Accessed 2026-09-20.}
}

Citations carry the pack version and the article's as-of date so they resolve to the same text later. The facts themselves belong to the sources listed below; cite those for the science.

Sources for this article: Stratum editorial (Stratum editorial);Macrostrat (CC-BY-4.0);Paleobiology Database (CC-BY-4.0). As of 2026-09-19; Study 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:stage-10.