# GSSP for the base of Dapingian

> global boundary stratotype section and point for the base of the Dapingian Stage and of the Middle Ordovician Series

**Wikidata**: [Q134822707](https://www.wikidata.org/wiki/Q134822707)  
**Source**: https://4ort.xyz/entity/gssp-for-the-base-of-dapingian


## References

1. [Source](https://stratigraphy.org/gssps/dapingian)
2. [Source](https://doi.org/10.18814/epiiugs/2009/v32i2/003)
3. [Source](https://stratigraphy.org/gssps/#ordovician)