# Echiurida

> class of marine annelids

**Wikidata**: [Q18668416](https://www.wikidata.org/wiki/Q18668416)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Echiurida)  
**Source**: https://4ort.xyz/entity/echiurida


## References

1. World Register of Marine Species
2. Dyntaxa
3. Open Tree of Life reference taxonomy version 3.6