# Precambrian

> informal supereon on the geological timescale, spanning from Earth's formation to the Cambrian Period

**Wikidata**: [Q103910](https://www.wikidata.org/wiki/Q103910)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Precambrian)  
**Source**: https://4ort.xyz/entity/precambrian


## References

1. Integrated Authority File
2. [Nuovo soggettario](https://thes.bncf.firenze.sbn.it/termine.php?id=31159)
3. International Chronostratigraphic Chart 2024/12
4. [Source](https://stratigraphy.org/ICSchart/CGMW_ICS_colour_codes.xlsx)
5. Nuovo soggettario
6. BabelNet
7. National Library of Israel
8. KBpedia
9. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)