# Visean

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

**Wikidata**: [Q647290](https://www.wikidata.org/wiki/Q647290)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Viséan)  
**Source**: https://4ort.xyz/entity/visean


## References

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