# Helenodoridae

> extinct family of velvet worms

**Wikidata**: [Q15137954](https://www.wikidata.org/wiki/Q15137954)  
**Source**: https://4ort.xyz/entity/helenodoridae


## References

1. Phylum Onychophora Grube, 1853
2. Global Biodiversity Information Facility
3. Interim Register of Marine and Nonmarine Genera
4. Open Tree of Life reference taxonomy version 3.6