Species
Sphenoecium robustus Maletz, Steiner et Fatka, 2005
Synonymy list
2005 Rhabdotubus robustus sp.nov. — Maletz et al. , pp. 85, fig. 7-8
2015 Sphenoecium robustus maletz et al., 2005 — Maletz & Steiner , pp. 1102
Classification
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Hemichordata |
| Class | Pterobranchia |
| Subclass | Graptolithina |
| Order | Rhabdopleuridae |
| Genus | Sphenoecium |
| Species | discoidalis |
| filicoides | |
| johanssoni | |
| mesocambricus | |
| obuti | |
| robustus | |
| tubularis | |
| wheelerensis |