Spengelidae

Spengelidae is a family of worms belonging to the class Enteropneusta, order unknown.^[1] The larvae of one of its species, Schizocardium californicum, are known for not expressing Hox genes.^[2]

Spengelidae
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Hemichordata
Class:	Enteropneusta
Order:	Enteropneusta
Family:	Spengelidae
Synonyms
Spengeliidae

Genera:^[1]

• Glandiceps Spengel, 1891
• Mazoglossus Bardack, 1997
• Schizocardium Spengel, 1893
• Spengelia Willey, 1898
• Willeyia Punnett, 1903

References

1. "Spengelidae". www.gbif.org. Retrieved 10 June 2021.
2. Hejnol A, Vellutini BC (January 2017). "Larval Evolution: I'll Tail You Later…". Current Biology. 27 (1): R21–R24. Bibcode:2017CBio...27..R21H. doi:10.1016/j.cub.2016.10.057. PMID 28073016.