Species
Apidium rotundum Høeg, 1932
Synonymy list
1932     Apidium rotundum, n. sp. — Høeg , pp. 76, fig. Pl. 7:4-6
1972     Apidium rotundum Høeg — Gnilovskaya , pp. 67
1987     Apidium rotundum Høeg, 1932 — Kato et al. , pp. 314
Selection of related publications
Gnilovskaya, M. B. 1972. The Calcareous Algae of the Middle and Late Ordovician of the Eastern Kazakhstan. pp. 1-196.  Nauka. 
Classification
| Organism group | Biota | 
| Kingdom | Plantae | 
| Organism group | Algae (informal) | 
| Phylum | Chlorophyta | 
| Subphylum | Siphonales | 
| Class | Receptaculitaphyceae | 
| Order | Cyclocrinales | 
| Family | Apidiacea | 
| Genus | Apidium | 
| Species | krausei | 
| pygmaeum | |
| rotundum | |
| sororis | 
References based on distribution