# Graptolithina

> subclass of Pterobranchia

**Wikidata**: [Q332403](https://www.wikidata.org/wiki/Q332403)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Graptolite)  
**Source**: https://4ort.xyz/entity/graptolithina


## References

1. Phylogenetic analysis reveals that Rhabdopleura is an extant graptolite
2. Freebase Data Dumps. 2013
3. World Register of Marine Species
4. New Zealand Organisms Register
5. Interim Register of Marine and Nonmarine Genera