# Middle Devonian

> second series and epoch of the Devonian system and period

**Wikidata**: [Q731313](https://www.wikidata.org/wiki/Q731313)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Middle_Devonian)  
**Source**: https://4ort.xyz/entity/middle-devonian


## References

1. International Chronostratigraphic Chart 2013/01