Genus
Semitreta Biernat, 1973
Selection of related publications
Holmer, L. E., Biernat, G. 2002. Lingulate brachiopods from Lower Ordovician (Tremadoc) chalcedonites, Holy Cross Mountains, Poland. Acta Palaeontologica Polonica 47, 1, 141-156.
Gorjansky, V. J. 1969. Bezzamkovye brahiopody kembrijskih i ordovikskih otloženij severo-zapada Russkoj platformy. pp. 1-176. Nedra.
List of species
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Klassificering
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Brachiopoda |
| Subphylum | Linguliformea |
| Class | Lingulata |
| Order | Acrotretida |
| Superfamily | Acrotretoidea |
| Family | Acrotretidae |
| Genus | Acrotreta |
| Angulotreta | |
| Conotreta | |
| Cyrtonotreta | |
| Dactylotreta | |
| Ditreta | |
| Eschatelasma | |
| Eurytreta | |
| Hisingerella | |
| Linnarssonia | |
| Longipegma | |
| Neotreta | |
| Ottenbyella | |
| Physotreta | |
| Quadrisonia | |
| Semitreta | |
| Species | magna |
| maior | |
| Genus | Spondylotreta |
| Treptotreta | |
| Vandalotreta |
See also