Species
Trigonodictya elegans (Ulrich, 1893)
Synonymy list
1893     Pachydictya elegans — Ulrich , pp. 154, fig. 8:18,19; 9:8,9
1911     Pachydictya elegans Ulrich — Bassler , pp. 138, fig. text fig. 61,62
1952     Pachydictya elegans Ulrich — Toots , pp. 130, fig. 8:4
1959     Pachydictya elegans Ulrich — Männil , pp. 38
1962     Pachydictya elegans Ulrich, 1893 — Kiepura , pp. 408, fig. VII 3
1970     Pachydictya elegans Ulrich — Rõõmusoks , pp. 328, fig. table 17
1975     Pachydictya elegans Ulrich, 1893 — Kopajevich , pp. 59
1993     Trigonodictya elegans (Ulrich, 1893) — Gorjunova & Lavretjeva , pp. 51
2009     Trigonodictya elegans — Pachut & Fisherkeller , pp. 404
Selection of related publications
Rõõmusoks, A. 1970. Stratigraphy of the Viruan Series (Middle Ordovician) in Northern Estonia, I. pp. 1-346.  Valgus. 
Kiepura, M. 1962. Bryozoa from the Ordovician erratic boulders of Poland.  Acta Palaeontologica Polonica   7,   3-4,   347-428.
Bassler, R. S. 1911. The Early Paleozoic Bryozoa of the Baltic Provinces.  Bulletin of the US National Museum   77,      1-382.
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Classification
| Organism group | Biota | 
| Kingdom | Animalia | 
| Phylum | Bryozoa | 
| Class | Stenolaemata | 
| Superorder | Palaeostomata | 
| Order | Cryptostomata | 
| Suborder | Ptilodictyina | 
| Family | Ptilodictyidae | 
| Subfamily | Virgatellinae | 
| Genus | Trigonodictya | 
| Species | conciliatrix | 
| cyclostomoides | |
| elegans | 
References based on distribution
- Toots, 1952a Kukruse Stage
- Bassler, 1911b Rakvere
- Kiepura, 1962
- Rõõmusoks, 1970a Vasalemma Oandu Stage
- Rõõmusoks, 1970a Tuula Oandu Stage