Genus
Psammosphaera Schultze, 1875
Aiheeseen liittyvät julkaisut
Winchester-Seeto, T., McIlroy, D. 2006. Lower Cambrian melanosclerites and foraminiferal linings from the Lontova Formation, St. Petersburg, Russia. Review of Palaeobotany and Palynology 139, 1-4, 71-79. DOI:10.1016/j.revpalbo.2005.07.012
List of species
Luokittelu
| Organism group | Biota |
| Protista | |
| Rhizaria | |
| Phylum | Retaria |
| Subphylum | Foraminifera |
| Suborder | Rotaliina |
| Textulariina | |
| Family | Allogromiidae |
| Genus | Ammolagena |
| Amphitremoida | |
| Archaeochitina | |
| Astrorhiza | |
| Blastammina | |
| Hyperammina | |
| Luekatiella | |
| Ordovicina | |
| Psammosphaera | |
| Species | cava |
| rugosa | |
| Genus | Pseudoastrorhiza |
| Sorosphaera | |
| Stegnammina | |
| Thurammina |
Levinneisyys ja viitteet