Genus
Signetopsis Henningsmoen, 1954
Aiheeseen liittyvät julkaisut
Hansch, W. 1991. Die silurischen Geschiebe-Ostrakoden von Krause, Steusloff und Kummerow. Archiv für Geschiebekunde 1, 2, 79-104.
Abushik, A. F., Ivanova, V. A., Kochetkova, N. M., Martynova, G. L., Neckaja, A. I., Rozdestvenskaya, A. A. 1960. Novye paleozojskie ostrakody Russkoj i Sibirskoj platform, Urala i Pečorskoj grâdy. New species of prehistoric plants and invertebrates of the USSR. Vol. II, pp. 280-367. Gosgeoltehizdat.
List of species
3. Signetopsis rotundata (Krause, 1891) | Wenlock
4. Signetopsis semicircularis (Krause, 1891) | Rootsiküla Stage
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Luokittelu
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Arthropoda |
| Subphylum | Crustacea |
| Superclass | Oligostraca |
| Class | Ostracoda |
| Subclass | Podocopa |
| Order | Palaeocopida |
| Suborder | Beyrichicopina |
| Palaeocopa | |
| Superfamily | Primitiopsacea |
| Family | Primitiopsididae |
| Subfamily | Primitiopsinae |
| Genus | Clavofabella |
| Macuwemuna | |
| Orcofabella | |
| Primitiopsella | |
| Primitiopsis | |
| Signetopsis | |
| Species | malornata |
| quadrilobata | |
| rotundata | |
| semicircularis | |
| Genus | Undulirete |