Genus
Parvohallopora Singh, 1979
Selection of related publications
Pushkin, V., Pushkina, N. 2013. Mšanki semejstva Halloporidae [Мшанки семейства Halloporidae]. pp. 1-100.  LAP LAMBERT Academic Publishing. 
Ernst, A., Nakrem, H. 2012. Late Ordovician (Sandbian) bryozoans and their depositional environment, Furuberget Formation, Mjøsa District, Oslo Region, Norway.  Bulletin of Geosciences   87,   1,   21-44. DOI:10.3140/bull.geosci.1316
Ernst, A., Nakrem, H. A. 2011. Stenolaemate bryozoans from the Mjøsa Formation (Late Ordovician, Katian) of Helgøya (Mjøsa), southern Norway.  Norwegian Journal of Geology   91,   3,   163-180.
Pushkin, V. I. 1987. Ordovikskie mšanki podotrâda Halloporina Belorussii i smežnyh rajonov Vostočno- Evropejskoj platformy.  Ordovik Belorussii, pp. 145-232.   Nauka i Tehnika. 
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.
Männil, R. M. 1959. Questions of stratigraphy and bryozoans of the Ordovician of Estonia. pp. 1-852.  Institut Geologii Akademii Nauk Estonskoi SSR. 
Modzalevskaya, E. A. 1953. Trepostomaty ordovika Pribaltiki i ih stratigraficheskoe znachenie.  Trudy Vsesoûznogo Naučno-Issledovatel'skogo Geologo-Razvedočnogo Instituta (VNIGRI)         91-167.  Gostoptehizdat. 
Bekker, H. 1921. The Kuckers stage of the Ordovician Rocks in NE Estonia.  Acta et Commentationes Universitatis Tartuensis   II,   1,   1-92.
Bassler, R. S. 1911. The Early Paleozoic Bryozoa of the Baltic Provinces.  Bulletin of the US National Museum   77,      1-382.
List of species
2. Parvohallopora ramosa (d’Orbigny, 1850) | Sandbian
4. Parvohallopora subplana (Ulrich, 1882) | Ordovician
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Classification
| Organism group | Biota | 
| Kingdom | Animalia | 
| Phylum | Bryozoa | 
| Class | Stenolaemata | 
| Superorder | Palaeostomata | 
| Order | Trepostomata | 
| Suborder | Halloporina (suborder) | 
| Family | Halloporidae | 
| Genus | Astroviellina | 
| Calloporella | |
| Diplotrypa | |
| Hallopora | |
| Hexaporites | |
| Parvohallopora | |
| Species | dumalis | 
| ramosa | |
| subnodosa | |
| subplana | |
| subwesenbergiana | |
| undulata | |
| wesenbergiana | |
| Genus | Tarphophragma | 
References based on distribution
- Ernst & Nakrem, 2012 Furuberget, Norway Sandbian