# Orphnurgus rigidus
**Wikidata**: [Q105421506](https://www.wikidata.org/wiki/Q105421506)  
**Source**: https://4ort.xyz/entity/orphnurgus-rigidus


## References

1. World Register of Marine Species
2. Report on the holothurians collected by the United States Fisheries steamer Albatross in the northwestern Pacific during the summer of 1906
3. Integrated Taxonomic Information System
4. Global Biodiversity Information Facility
5. Interim Register of Marine and Nonmarine Genera