# Polycyathus difficilis

> species of cnidarian

**Wikidata**: [Q3948686](https://www.wikidata.org/wiki/Q3948686)  
**Source**: https://4ort.xyz/entity/polycyathus-difficilis


## References

1. Integrated Taxonomic Information System. 1996
2. Global Biodiversity Information Facility
3. World Register of Marine Species
4. Species+
5. Interim Register of Marine and Nonmarine Genera
6. SeaLifeBase
7. Open Tree of Life reference taxonomy version 3.2