Subspecies
Cyrtonotella kuckersiana frechi (Wysogórski, 1900)
Synonymy list
1900     Orthis Frechi n. sp. — Wysogorski , pp. 12, fig. pl. 8
1930     Orthis aff. frechi Wysogorski — Öpik , pp. 79, fig. pl. 3: 20, 23
1930     Orthis cf. frechi Wysogorski — Öpik , pp. 14-15, fig. pl. 1: 5
1953     Cyrtonotella kuckersiana frechi (Wysogorski) — Alichova , pp. 36, fig. pl. 2: 7, 10
1969     Cyrtonotella kuckersiana frechi (Wysogorski) — Alichova , pp. 23-24, fig. pl. 1: 12-13
2004     Cyrtonotella kukersiana frechi (Wysogorski) — Hints , pp. 636-637, fig. pl. 2: A-C; pl. 3: B-G
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.
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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 |