Species
Orthosphaeridium densigranosum Kjellström, 1971
Synonymy list
1971 Orthosphaeridium densigranosum — Kjellström , pp. 28-30 , fig. Fig. 19
2020 Orthosphaeridium octospinosum — Navidi-Izad , pp. 7
Classification
| Organism group | Biota |
| Protista | |
| Acritarcha | |
| Genus | Orthosphaeridium |
| Species | bispinosum |
| chondrododora | |
| densigranosum | |
| densiverrucosum | |
| insculptum | |
| latispinosum | |
| octospinosum | |
| rectangulare | |
| ternatum | |
| vibrissiferum |