Period · Mesoproterozoic
Calymmian
1600–1400 Ma
The Calymmian is a period within the Mesoproterozoic, spanning roughly 1600 to 1400 million years ago.
| Rank | period· Paleobiology Database |
|---|---|
| Base | 1600 Ma· Paleobiology Database |
| Top | 1400 Ma· Paleobiology Database |
| Duration | 200 Myr· Paleobiology Database |
| Chart | ICS International Chronostratigraphic Chart v2023/09 (ages from Macrostrat/PBDB interval tables) |
Elsewhere
Cite this article
Stratum Strata. "Calymmian" (Time interval). Stratum Strata pack 2026.09, as of 2026-09-21. https://stratum.black/strata/time/calymmian. Accessed 2026-09-21.
@misc{stratum-calymmian,
title = {Calymmian},
author = {{Stratum Strata}},
howpublished = {\url{https://stratum.black/strata/time/calymmian}},
year = {2026},
note = {Time interval article, Stratum Strata pack 2026.09, as of 2026-09-21; sources: stratum, pbdb. Accessed 2026-09-21.}
} 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.