Genus
Kjaerina Bancroft, 1929
Selection of related publications
Rõõmusoks, A. 2004. Ordovician strophomenoid brachiopods of northern Estonia.  Fossilia Baltica 3, pp. 1-151.   Tartu Ülikooli geoloogia Instituut. 
Rõõmusoks, A. 1993. A review of Estonian Ordovician rafinesquinids (Brachiopoda, Strophomenacea).  Proceedings of the Estonian Academy of Sciences. Geology   42,   4,   160-166. DOI:10.3176/geol.1993.4.03
List of species
1. Kjaerina poljensis (Alichova, 1951) | Oandu Stage
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Classification
| Organism group | Biota | 
| Kingdom | Animalia | 
| Phylum | Brachiopoda | 
| Subphylum | Rhynchonelliformea | 
| Class | Strophomenata | 
| Order | Strophomenida | 
| Superfamily | Strophomenoidea | 
| Family | Rafinesquinidae | 
| Subfamily | Rafinesquininae | 
| Genus | Crassitestella | 
| Hedstroemina | |
| Kjaerina | |
| Species | poljensis | 
| Genus | Kjerulfina | 
| Pirgumena | |
| Rafinesquina | |
| Rakverina | |
| Virunites |