# Pleistocene

> first epoch of the Quaternary Period

**Wikidata**: [Q25546](https://www.wikidata.org/wiki/Q25546)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Pleistocene)  
**Source**: https://4ort.xyz/entity/pleistocene


## References

1. [Source](https://zenodo.org/records/5460860)
2. International Chronostratigraphic Chart 2023/09
3. Integrated Authority File
4. [Nuovo soggettario](https://thes.bncf.firenze.sbn.it/termine.php?id=32658)
5. [Source](https://stratigraphy.org/ICSchart/CGMW_ICS_colour_codes.xlsx)
6. Nuovo soggettario
7. Freebase Data Dumps. 2013
8. YSO-Wikidata mapping project
9. BabelNet
10. National Library of Israel
11. KBpedia
12. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)