# Hydroida

> order of cnidarians

**Wikidata**: [Q2363186](https://www.wikidata.org/wiki/Q2363186)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Hydroida)  
**Source**: https://4ort.xyz/entity/hydroida


## References

1. Freebase Data Dumps. 2013
2. Integrated Taxonomic Information System
3. Fossilworks
4. World Register of Marine Species
5. National Biodiversity Network
6. Interim Register of Marine and Nonmarine Genera
7. Open Tree of Life reference taxonomy version 3.6