Family
Apidiacea Spjeldnaes et Nitecki, 1990
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.
Stolley, E. 1898. Neue Siphoneen aus baltischen Silur. Archiv für Antropologie und Geologie Schleswig-Holsteins und der benachbarten Gebiete 3, 1, 40-67.
List of species
1. Apidium krausei (Kiesow, 1893) | Jõhvi Substage
2. Apidium pygmaeum Stolley, 1896 | Jõhvi Substage
3. Apidium rotundum Høeg, 1932 | Upper Ordovician
4. Apidium sororis Stolley, 1896 | Jõhvi Substage
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Classification
| Organism group | Biota |
| Kingdom | Plantae |
| Organism group | Algae (informal) |
| Phylum | Chlorophyta |
| Subphylum | Siphonales |
| Class | Receptaculitaphyceae |
| Order | Cyclocrinales |
| Family | Apidiacea |
| Genus | Apidium |
| Family | Coelosphaeridiaceae |
| Cyclocrinacea |