Species
Sphenoecium discoidalis Chapman et Thomas, 1936
Synonyymit
1936 Sphenoecium discoidalis — Chapman & Thomas , pp. 205, fig. 16:25
2006 Sphenoecium discoidalis — Rickards & Durman , pp. 71, fig. 63-65
2015 Sphenoecium discoidalis Chapman and Thomas, 1936 — Maletz & Steiner , pp. 1102, fig. 13E-F
Luokittelu
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Hemichordata |
| Class | Pterobranchia |
| Subclass | Graptolithina |
| Order | Rhabdopleuridae |
| Genus | Sphenoecium |
| Species | discoidalis |
| filicoides | |
| johanssoni | |
| mesocambricus | |
| obuti | |
| robustus | |
| tubularis | |
| wheelerensis |