# Orthocidaris

> extinct genus of echinoderms

**Wikidata**: [Q23003502](https://www.wikidata.org/wiki/Q23003502)  
**Source**: https://4ort.xyz/entity/orthocidaris


## References

1. Classification méthodique et genera des échinides vivants et fossiles
2. Fossilworks
3. World Register of Marine Species
4. Open Tree of Life reference taxonomy version 3.6