Genus

Heterotrypa Nicholson, 1879

Aiheeseen liittyvät julkaisut
Ernst, A., Nakrem, H. 2015. 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. Ordovikskie mšanki podotrâda Halloporina Belorussii i smežnyh rajonov Vostočno- Evropejskoj platformy. Ordovik Belorussii, pp. 145-232. Nauka i Tehnika.
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 3, 51-57.
Pushkin, V. I. 1976. Novye vidy ordovikskih i silurijskih mšanok Brestskoj vpadiny. Novye vidy iskopaemyh životnyh i rastenij Belorussii, pp. 3-40. Nauka i tehnika.
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.
List of species
2. Heterotrypa compressa Brood, 1978 | Upper Ordovician
5. Heterotrypa obscura (Ulrich, 1882) | Rakvere StageNabala Stage
6. Heterotrypa praenuntia (Ulrich, 1893) | Kukruse StageRakvere Stage
9. Heterotrypa undata Pushkin, 1987 | Jõhvi SubstageKeila Stage