Bryozoa

Heterotrypa Nicholson, 1879

Selection of related publications
Ernst, A., Nakrem, H. 2014. Bryozoans from the lower Silurian (Wenlock) Steinsfjorden Formation of Ringerike, southern Norway. Bulletin of Geosciences 90, 1, 65-87. DOI:10.3140/bull.geosci.1521
Pushkin, V. I. 1987. Bryozoans of suborder Halloporina from Belorussia and East European Platform. Ordovician of Belarus, pp. 145-232.
Brood, K. 1980. Upper Ordovician bryozoa from Dalmantina beds of Kinnekulle, Sweden. GFF 102, 1, 27-35. DOI:10.1080/11035898009448587
Pushkin, V. I. 1976. On the genus Anaphragma (Bryozoa). Paleontologicheski Zhurnal , 1, 51-57.
Pushkin, V. I. 1976. New species of Ordovician and Silurian Bryozoans of the Brest Depression. New species of fossil animals and plants of Byelarus, pp. 3-40.
Rõõmusoks, A. 1970. Stratigraphy of the Viruan Series (Middle Ordovician) in Northern Estonia, I.
Männil, R. M. 1959. Stratigraphy of Ordovician Bryozoa from Estonia. Kandidaadi dissertatsioon, 3 köidet (I, II, III), pp. 1-852.
Modzalevskaya, E. A. 1953. Trepostomaty ordovika Pribaltiki i ih stratigraficheskoe znachenie. Tudy Vsesoûznogo Naučno-Issledovatel'skogo Geologo-Razvedočnogo Instituta (VNIGRI) , 91-167. Stratigraphy and fauna of the Ordovician and Silurian West Russian Platform, pp. 91-167.
Bassler, R. S. 1911. The Early Paleozoic Bryozoa of the Baltic Provinces. Bulletin of the US National Museum 77, 1-382.