Ostracoda

Sigmoopsis Henningsmoen, 1953

Selection of related publications
Perrier, V., Meidla, T., Tinn, O., Ainsaar, L. 2012. Biotic response to explosive volcanism: Ostracod recovery after Ordovician ash-falls. Palaeogeography, Palaeoclimatology, Palaeoecology 365, 166-183. DOI:10.1016/j.palaeo.2012.09.024
Meidla, T. 1996. Late Ordovician Ostracodes of Estonia. Fossilia Baltica 2.
Nõlvak, J., Meidla, T., Uutela, A. 1995. Microfossils in the Ordovician erratic boulders from Southwestern Finland. Bulletin of the Geological Society of Finland 67, 2, 3-26. DOI:10.17741/bgsf/67.2.001
Sidaravičiene, N. 1992. Ordovician ostracods of Lithuania.
Nõlvak, J. 1972. A characterization of the boundary beds of the Kukruse and Idavere stages in the Lipu boring. Loodusuurijate Seltsi Aastaraamat, pp. 39-59.
Neckaja, A. I. 1953. Tetradellidy ordovika Pribaltiki i ih stratigraficheskoe znachenie. Trudy Vsesoûznogo Naučno-Issledovatel'skogo Geologo-Razvedočnogo Instituta (VNIGRI) , 309-363. Stratigraphy and fauna of the Ordovician and Silurian West Russian Platform, pp. 309-363.
Öpik, A. 1937. Ostracoda from the Ordovician Uhaku and Kukruse formations of Estonia. Tartu Ülikooli Geoloogia Instituudi Toimetused 50, 1-58.
References based on distribution