Species
Helicelasma poulseni (Cox, 1937)
Synonymy list
1937     Streptelasma poulseni — Cox , pp. 9,10, fig. 2:8,9
1975     Helicelasma poulseni — McLean & Webby , pp. 233
1981     Helicelasma poulseni (Cox, 1937) — Elias , pp. 20
Classification
| Organism group | Biota | 
| Kingdom | Animalia | 
| Phylum | Cnidaria | 
| Subphylum | Anthozoa | 
| Subclass | Rugosa | 
| Order | Stauriida | 
| Suborder | Streptelasmatina | 
| Family | Streptelasmatidae | 
| Subfamily | Streptelasmatinae | 
| Genus | Helicelasma | 
| Species | bystrowi | 
| poulseni | |
| simplex |