Bivalvia

Cyrtodontoidea Ulrich, 1894

Selection of related publications
Liljedahl, L. 1992. Yonginella, a new bivalve (Mollusca) from the Silurian of Gotland. Journal of Paleontology 66, 2, 211-214. DOI:10.1017/S0022336000033734
Isakar, M., Sinitsyna, I. 1985. Redescription of E. Eichwald's Ordovician bivalve species. Eesti NSV Teaduste Akadeemia Toimetised, Geoloogia / Известия Академии наук Эстонской ССР. Геология 34, 2, 46-54.
Sinicyna, I. N. 1983. New genus of Bivalve molluscs from the Middle Ordovician of north-east of East-European platform. Paleontologicheski Zhurnal , 29-32. DOI:Paleontologičeskij sbornik
Bekker, H. 1921. The Kuckers stage of the Ordovician Rocks in NE Estonia. Acta et Commentationes Universitatis Tartuensis II, 1, 1-90.