# Tournaisian

> first stage and age of the Mississippian subsystem and subperiod and of the Carboniferous system and period

**Wikidata**: [Q940381](https://www.wikidata.org/wiki/Q940381)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Tournaisian)  
**Source**: https://4ort.xyz/entity/tournaisian


## References

1. International Chronostratigraphic Chart 2023/09
2. CGMW ICS colour codes
3. [Source](https://stratigraphy.org/gssps/)
4. Freebase Data Dumps. 2013
5. BabelNet
6. [Source](https://doi.org/10.18814/epiiugs/1991/v14i4/004)
7. [Source](https://stratigraphy.org/gssps/tournaisian)
8. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)