Genus
Ordovicina Eisеnасk, 1937
List of species
1. Ordovicina monostoma Eisеnасk, 1954 | Ordovician
Klassificering
| Organism group | Biota |
| Phylum | Retaria |
| Subphylum | Foraminifera |
| Suborder | Rotaliina |
| Textulariina | |
| Family | Allogromiidae |
| Genus | Ammolagena |
| Amphitremoida | |
| Archaeochitina | |
| Astrorhiza | |
| Blastammina | |
| Hyperammina | |
| Luekatiella | |
| Ordovicina | |
| Species | monostoma |
| oligostoma | |
| Genus | Psammosphaera |
| Pseudoastrorhiza | |
| Saccamminopsis | |
| Sorosphaera | |
| Stegnammina | |
| Thurammina |