Subspecies
Cyrtonotella kuckersiana kuckersiana (Wysogórski, 1900)
Synonymy list
1861     Orthis rustica — Eichwald , pp. 238, fig. pl. 12: 23
1900     Orthis kuckersiana n. sp. — Wysogorski , pp. 12, fig. pl. 8
1930     Orthis kukersiana Wysogorski — Öpik , pp. 70-76, fig. pl. 2: 14-18, text-figs 7-8
1930     Orthis kukersiana Wysogorski — Öpik , pp. 14, fig. pl. 1: 6
1934     Cyrtonotella kukersiana (Wysogorski) — Öpik , pp. 58-61, fig. pl. 45: 1-2; pl. 46: 1; pl. 47-48
1949     Cyrtonotella kukersiana (Wysogorski) — Lesnikova , pp. 203, fig. pl. 32: 1-3b
1951     Cyrtonotella kuckersiana (Wysogorski) — Alichova , pp. 24-25, fig. pl.2: 20
1951     Cyrtonotella concava (Schmidt) — Alichova , pp. 25-26, fig. pl. 2: 22-23
1953     Cyrtonotella kuckersiana kuckersiana (Wysogorski) — Alichova , pp. 32-36, fig. pl. 2: 11-13
1969     Cyrtonotella kuckersiana kuckersiana (Wysogorski) — Alichova , pp. 22-23, fig. pl. 1: 10-11
Selection of related publications
Hints, L. 2019. The Ordovician brachiopod genus Cyrtonotella: taxonomy and distribution in the Baltic Basin.  Estonian Journal of Earth Sciences   68,   3,   147-159. DOI:10.3176/earth.2019.10
Hints, L. 2004. Maximizing diductor adhension: An unusual cardinal process in Late Ordovician brachiopods from Estonia.  Acta Palaeontologica Polonica   49,   4,   635-638.
Öpik, A. 1930. Brachiopoda Protremata der estländischen ordovizischen Kukruse-Stufe.  Tartu Ülikooli Geoloogia Instituudi Toimetused   20,      1-261.
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Classification
| Organism group | Biota | 
| Kingdom | Animalia | 
| Phylum | Brachiopoda | 
| Subphylum | Rhynchonelliformea | 
| Class | Rhynchonellata | 
| Order | Orthida | 
| Suborder | Orthidina | 
| Superfamily | Orthoidea | 
| Genus | Cyrtonotella | 
| Species | kuckersiana | 
| Subspecies | frechi | 
| kuckersiana | 
References based on distribution
- Öpik, 1930a Kohtla Kukruse Stage