# Bashkirian

> first stage and age of the Pennsylvanian subsystem and subperiod; fourth age of the Carboniferous system and period

**Wikidata**: [Q639443](https://www.wikidata.org/wiki/Q639443)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Bashkirian)  
**Source**: https://4ort.xyz/entity/bashkirian


## 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/1999/v22i4/003)
7. [Source](https://www.researchgate.net/publication/280917840)