Genus
Helicelasma Neuman, 1969
Aiheeseen liittyvät julkaisut
Vinn, O., Liang, K., Toom, U. 2017. Endobiotic rugose coral symbionts in Silurian tabulate corals from Estonia (Baltica). Palaios 32, 3, 158-165. DOI:10.2110/palo.2016.084
Neuman, B. 1969. Upper Ordovician Streptelasmatid Corals from Scandinavia. Bulletin of the Geological Institutions of the University of Uppsala 1, 1, 1-73.
Reiman, V. M. 1958. New rugose corals from upper Ordovician and Llandoverian deposits of Baltic. ENSV TA Geoloogia Instituudi Uurimused II, 33-47.
List of species
1. Helicelasma bystrowi (Reiman, 1958) | Vormsi Stage
2. Helicelasma poulseni (Cox, 1937) | Pirgu Stage
3. Helicelasma simplex Neuman, 1969 | Upper Ordovician
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Luokittelu
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Cnidaria |
| Class | Anthozoa |
| Subclass | Rugosa |
| Order | Stauriida |
| Suborder | Streptelasmatina |
| Family | Streptelasmatidae |
| Subfamily | Streptelasmatinae |
| Genus | Axolasma |
| Bighornia | |
| Borelasma | |
| Densigrewingkia | |
| Densiphyllum | |
| Eurogrewingkia | |
| Fosselasma | |
| Grewingkia | |
| Helicelasma | |
| Species | bystrowi |
| poulseni | |
| simplex | |
| Genus | Heterophrentis |
| Kaljolasma | |
| Kenophyllum | |
| Leolasma | |
| Lobocorallium | |
| Rectigrewingkia | |
| Rhegmaphyllum | |
| Streptelasma | |
| Tungussophyllum | |
| Ullernelasma |
Levinneisyys ja viitteet
- Neuman, 1969 Borenshult Upper Ordovician
- Neuman, 1969 Borenshult Upper Ordovician