Species
Eridotrypa exigua Ulrich, 1893
Synonymy list
1911     Eridotrypa exigua Ulrich — Bassler , pp. 245, fig. text fig 140
1953     Eridotrypa exigua Ulr. — Modzalevskaya , pp. 103
1968     Eridotrypa exigua Ulrich — Kopajevich , pp. 20
1978     Eridotrypa exigua Ulrich, 1893 — Astrova , pp. 85
2009     Eridotrypa exigua — Pachut & Fisherkeller , pp. 404
Selection of related publications
Modzalevskaya, E. A. 1953. Trepostomaty ordovika Pribaltiki i ih stratigraficheskoe znachenie.  Trudy Vsesoûznogo Naučno-Issledovatel'skogo Geologo-Razvedočnogo Instituta (VNIGRI)         91-167.  Gostoptehizdat. 
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 | Esthonioporata | 
| Family | Aisenvergiidae | 
| Genus | Eridotrypa | 
| Species | acanthoporica | 
| aedilis | |
| alterniformis | |
| boardmani | |
| capillaris | |
| crassa | |
| densipora | |
| estonica | |
| exigua | |
| jordanoporoides | |
| kibartaiensis | |
| magna | |
| minuta | |
| norvegica | |
| ovalis | |
| peculiare | |
| ramea | |
| scanensis | |
| simulatrix | |
| solida | |
| suecica | |
| superspinosa | |
| variabilis | 
References based on distribution
- Bassler, 1911b Kukruse Jõhvi Substage
- Modzalevskaya, 1953 Jõhvi Substage