# Middle Jurassic

> second series and epoch of the Jurassic system and period

**Wikidata**: [Q500054](https://www.wikidata.org/wiki/Q500054)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Middle_Jurassic)  
**Source**: https://4ort.xyz/entity/middle-jurassic


## References

1. International Chronostratigraphic Chart 2013/01
2. Freebase Data Dumps. 2013