Genus

Physotreta Rowell, 1966

Aiheeseen liittyvät julkaisut
Holmer, L. E. 1989. Middle Ordovician phosphatic inarticulate brachiopods from Västergötland and Dalarna, Sweden. Fossils and Strata 26, 1-172.
List of species
1. Physotreta deformis Holmer, 1989 | Lasnamägi Stage