# protostome

> clade of animals whose mouth develops before the anus

**Wikidata**: [Q5171](https://www.wikidata.org/wiki/Q5171)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Protostome)  
**Source**: https://4ort.xyz/entity/protostome


## References

1. A higher level classification of all living organisms
2. Freebase Data Dumps. 2013
3. Taxonomy database of the U.S. National Center for Biotechnology Information
4. Integrated Taxonomic Information System
5. Encyclopedia of Life
6. UMLS 2023