Bryozoa

Proavella Männil, 1958

Selection of related publications
Gorjunova, R. V., Lavrentjeva, V. D. 1993. Morphology and system of the cryptostome bryozoans. Transactions of the Paleontological Institute (PIN) 257, 1-151.
Rõõmusoks, A. 1970. Stratigraphy of the Viruan Series (Middle Ordovician) in Northern Estonia, I.
Männil, R. M. 1959. On Ordovician stratigraphy and bryozoans of Estonia.
Bassler, R. S. 1911. The Early Paleozoic Bryozoa of the Baltic Provinces. Bulletin of the US National Museum 77, 1-382.
Eichwald, E. 1861. Paleontologiâ Rossii. Drevnij period. II. Fauna grauvakkovoj, gornoizvestkovoj i medistoslancevatoj formacij Rossii.