Bryozoa
Genus

Hemiphragma Ulrich, 1893

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Selection of related publications
Ernst, A. 2022. Bryozoan fauna from the Kunda Stage (Darriwilian, Middle Ordovician) of Estonia and NW Russia. Bulletin of Geosciences 97, 1, 33–68. DOI:10.3140/bull.geosci.1843
Koromyslova, A. V., Fedorov, P. V. 2021. The oldest bifoliate cystoporate and two other bryozoan taxa from the Dapingian (Middle Ordovician) of north-western Russia. Journal of Paleontology 95, 1, 24-39. DOI:10.1017/jpa.2020.73
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.
Koromyslova, A. V. 2011. Bryozoans of the Latorp and Volkhov horizons (Lower-Middle Ordovician) of the Leningrad Region. Paleontological Journal 45, 8, 887-980. DOI:10.1134/S0031030111080028
Pushkin, V. I., Popov, L. E. 1999. Early Ordovician bryozoans from north-western Russia. Palaeontology 42, 1, 171-189. DOI:10.1111/1475-4983.00067
Gorjunova, R. V. 1996. Phylogeny of the Paleozoic bryozoans. Transactions of the Paleontological Institute (PIN) 267, 1-163. Nauka.
Pushkin, V. I. 1987. Ordovikskie mšanki podotrâda Halloporina Belorussii i smežnyh rajonov Vostočno- Evropejskoj platformy.Ordovik Belorussii , pp. 145-232. Nauka i Tehnika.
Modzalevskaya, E. A. 1986. Bryozoa of the family Dittoporidae from Ordovician of Leningrad area. Ežegodnik Vsesoûznogo Paleontologičeskogo Obŝestva XXX, 74-91.
Gorjunova, R. V. 1985. Morfologiâ, sistema i filogeniâ mšanok (otrâd Rhabdomesida). Transactions of the Paleontological Institute (PIN) 208, 1-152. Nauka.
Astrova, G. G. 1978. Istoriâ razvitiâ, sistema i filogeniâ mšanok otrâda Trepostomata. Transactions of the Paleontological Institute (PIN) 169, 1-240. Nauka.
Rõõmusoks, A. 1970. Stratigraphy of the Viruan Series (Middle Ordovician) in Northern Estonia, I. pp. 1-346. Valgus.
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.
Bassler, R. S. 1911. The Early Paleozoic Bryozoa of the Baltic Provinces. Bulletin of the US National Museum 77, 1-382.
Dybowski, W. 1877. Die Chaetetiden der ostbaltischen Silur-formation. pp. 1-134.
List of species
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Classification
Organism groupBiota
KingdomAnimalia
PhylumBryozoa
ClassStenolaemata
SuperorderPalaeostomata
OrderTrepostomata
SuborderHalloporina (suborder)
FamilyDittoporidae
GenusBalticoporella
Dittopora
Hemiphragma
Speciesbatheri
convexa
insolitum
irrasum
ottawaense
panderi
priscum
pygmaeum
rotundatum
subirrasum
tenuimurale
GenusPhragmoporella
References based on distribution