| Kingdom | Phylum | Class |
|---|---|---|
| Animalia | Hemichordata | Pterobranchia |
| Rank | Scientific name | Taxonomic status |
|---|---|---|
| genus | Baltograptus Maletz, 1994,1994 | doubtful |
| unranked | ? deflexus Elles & Wood, 1908 | doubtful |
| unranked | ? geometricus Tornquist, 1901 | doubtful |
| unranked | ? vacillans Tullberg, 1880 | doubtful |
Didymograptidae. GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via biodiversity.aq on 2019-11-17.