| Kingdom | Phylum | Class | Family |
|---|---|---|---|
| Animalia | Hemichordata | Enteropneusta | Spengelidae |
| Rank | Scientific name | Taxonomic status |
|---|---|---|
| species | Willeyia bisulcata Punnett, 1903 | accepted |
| species | Willeyia delagoensis Horst, 1940 | accepted |
| species | Willeyia loya Petersen, 1965 | accepted |
Willeyia Punnett, 1903. GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via biodiversity.aq on 2021-09-08.