Genus
Biernatia Holmer, 1989
Selection of related publications
Holmer, L. E. 1989. Middle Ordovician phosphatic inarticulate brachiopods from Västergötland and Dalarna, Sweden. Fossils and Strata 26, 1-172.
Gorjansky, V. J. 1969. Bezzamkovye brahiopody kembrijskih i ordovikskih otloženij severo-zapada Russkoj platformy. pp. 1-176. Nedra.
List of species
1. Biernatia holmi Holmer, 1989 | Darriwilian
2. Biernatia rossicum (Gorjansky, 1969) | Kunda Stage
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Klassificering
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Brachiopoda |
| Subphylum | Linguliformea |
| Class | Lingulata |
| Order | Acrotretida |
| Superfamily | Acrotretoidea |
| Family | Biernatidae |
| Genus | Biernatia |
| Species | holmi |
| rossicum | |
| Genus | Opsiconidion |