Species
Semitreta magna (Goryansky, 1969)
Synonymy list
1969     Torynelasma? magnum sp. nov. — Goryansky , pp. 72, fig. 12:12-14
1994     Semitreta? aff magna — Popov & Holmer 
Selection of related publications
Gorjansky, V. J. 1969. Bezzamkovye brahiopody kembrijskih i ordovikskih otloženij severo-zapada Russkoj platformy. pp. 1-176.  Nedra. 
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Classification
| Organism group | Biota | 
| Kingdom | Animalia | 
| Phylum | Brachiopoda | 
| Subphylum | Linguliformea | 
| Class | Lingulata | 
| Order | Acrotretida | 
| Superfamily | Acrotretoidea | 
| Family | Acrotretidae | 
| Genus | Semitreta | 
| Species | magna | 
| maior | 
References based on distribution
- Gorjansky, 1969 Maardu opencast mine Pakerort Stage
- Gorjansky, 1969 Türisalu cliff Pakerort Stage
- Gorjansky, 1969 Paldiski Pakerort Stage