Genus
Heterophrentis Billings, 1875
Classification
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Cnidaria |
| Subphylum | Anthozoa |
| Subclass | Rugosa |
| Order | Stauriida |
| Suborder | Streptelasmatina |
| Family | Streptelasmatidae |
| Subfamily | Streptelasmatinae |
| Genus | Axolasma |
| Bighornia | |
| Borelasma | |
| Densigrewingkia | |
| Densiphyllum | |
| Eurogrewingkia | |
| Fosselasma | |
| Grewingkia | |
| Helicelasma | |
| Heterophrentis | |
| Species | tetrafossulatum |
| Genus | Kaljolasma |
| Kenophyllum | |
| Leolasma | |
| Lobocorallium | |
| Rectigrewingkia | |
| Rhegmaphyllum | |
| Streptelasma | |
| Tungussophyllum | |
| Ullernelasma |