Genus
Spondylotreta Cooper, 1956
Aiheeseen liittyvät julkaisut
Popov L., Nõlvak J., Holmer, L. 1994. Late Ordovician lingulate brachiopods from Estonia. Palaeontology 37, 3, 627-650.
Holmer, L. E. 1989. Middle Ordovician phosphatic inarticulate brachiopods from Västergötland and Dalarna, Sweden. Fossils and Strata 26, 1-172.
Biernat, G. 1973. Ordovician Inarticulate Brachiopods from Poland and Estonia. Palaeontologia Polonica 28, 1-116.
List of species
1. Spondylotreta faceta Gorjansky, 1969 | Lower Ordovician
2. Spondylotreta orsaensis Holmer, 1989 | Sandbian
3. Spondylotreta parva Wright, 1963 | Pirgu Stage
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Luokittelu
| 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 | |
| Spondylotreta | |
| Species | faceta |
| orsaensis | |
| parva | |
| Genus | Treptotreta |
| Vandalotreta |