Species
Sivorthis filistera Jaanusson et Bassett, 1993
Synonymy list
1993 Sivorthis filistera sp. nov. — Jaanusson et Bassett , pp. 47-51, fig. 7: 1-7
Classification
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Brachiopoda |
| Subphylum | Rhynchonelliformea |
| Class | Rhynchonellata |
| Order | Orthida |
| Suborder | Orthidina |
| Superfamily | Orthoidea |
| Family | Orthidae |
| Genus | Sivorthis |
| Species | filistera |
| magna | |
| Sivorthis? freija |