Species
Sulevorthis lyckholmiensis (Wysogórski, 1900)
Type specimen data
neotype: Department of Geology, TalTech GIT 314-1, Kõrgessaare outcrop (Vormsi Island, Kõrgessaare) , Vormsi Stage (Vormsi Stage; Katian) 
Synonymy list
1900     Orthis lyckholmiensis sp. nov. — Wysogórski , pp. 12, fig. 8
1907     Orthis lyckholmiensis Wysogorski — Wiman , pp. 8, fig. 2: 9, 11-12a (non fig. 10)
1959     Orthis (?) lyckholmiensis Wysogorski — Oraspõld , pp. 57, fig. 2; 1-4
1993     Sulevorthis lyckholmiensis (Wysogorski, 1900)  — Jaanusson et Bassett , pp. 40-45, fig. 5: 1-6; 6: 3
Selection of related publications
Hints, L., Hints, O., Nemliher, R., Nõlvak, J. 2007. Hulterstad brachiopods and associated faunas in the Vormsi Stage (Upper Ordovician, Katian) of the Lelle core, Central Estonia.  Estonian Journal of Earth Sciences   56,   3,   131-142.
Jaanusson, V., Bassett, M. G. 1993. Orthambonites and related Ordovician brachiopod genera.  Palaeontology   36,   1,   21-63.
Oraspõld, A. L. 1959. Some representatives of the Superfamily Orthacea from the Upper Ordovician of Estonia.  Tartu Riikliku Ülikooli Toimetised   75,   I,   51-79.
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Classification
| Organism group | Biota | 
| Kingdom | Animalia | 
| Phylum | Brachiopoda | 
| Subphylum | Rhynchonelliformea | 
| Class | Rhynchonellata | 
| Order | Orthida | 
| Suborder | Orthidina | 
| Superfamily | Orthoidea | 
| Family | Orthidae | 
| Genus | Sulevorthis | 
| Species | lyckholmiensis |