Species
Hemitoechia undvaensis Rubel, 1977
Type specimen data
holotype: Department of Geology, TalTech GIT 173-55, Undva cliff (Island Saaremaa, Undva) , Jaani Stage (Ninase Formation, Jaani Stage) 
Synonymy list
1977     Hemitoechia undvaensis Rubel, sp. nov. — Rubel & Rozman , pp. 232, fig. pl 10: 8; pl. 11: 1-3; text-fig. 6
1984     Hemitoechia undvaensis Rubel, 1977 — Rubel et al. , pp. 21
Selection of related publications
Rubel, M., Rozman, H. 1977. New species of Silurian rhynchonelloid species of Estonia.  Facies and fauna of the Baltic Silurian, pp. 213-239.   Academy of Sciences of the Estonian S. S. R. Institute of Geology. 
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Classification
| Organism group | Biota | 
| Kingdom | Animalia | 
| Phylum | Brachiopoda | 
| Subphylum | Rhynchonelliformea | 
| Class | Rhynchonellata | 
| Order | Rhynchonellida | 
| Superfamily | Rhynchotrematoidea | 
| Family | Trigonorhynchiidae | 
| Subfamily | Hemitoechiinae | 
| Genus | Hemitoechia | 
| Species | undvaensis | 
References based on distribution
- Rubel & Rozman, 1977 Undva cliff Jaani Stage