# GSSP for the base of the Aalenian

> global boundary stratotype section and point for the base of the Aalenian Stage and the Middle Jurassic series

**Wikidata**: [Q105753535](https://www.wikidata.org/wiki/Q105753535)  
**Source**: https://4ort.xyz/entity/gssp-for-the-base-of-the-aalenian


## References

1. [Source](http://www.episodes.org/journal/view.html?doi=10.18814/epiiugs/2001/v24i3/003)
2. [Source](https://stratigraphy.org/gssps/#jurassic)