Subclass

Palaeoheterodonta Newell, 1965

Selection of related publications
Toom, U., Vinn, O., Isakar, M., Madison, A., Hints, O. 2020. Small faecal pellets in Ordovician shelly fossils from Estonia, Baltoscandia. Estonian Journal of Earth Sciences 69, 1, 1-19. DOI:10.3176/earth.2020.01
Kiselev, G. N., Sinicyna, I. N., Isakar, M. A., Mironova, M. G., Saladzhius, V. Y. 1990. Atlas mollûskov verhnego ordovika i silura severo-zapada Vostočno-Evropejskoj platformy. pp. 1-80. Leningrad University.
Isakar, M., Sinicyna, 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. DOI:10.3176/geol.1985.2.02
Saladžius, V. J. 1966. Mollusk fauna of the Silurian deposits of the south of the East Baltic territory. Palaeontology and stratigraphy of the Baltic and the Byelorussia. Number I (VI), pp. 31-73. Mintis.
Bekker, H. 1921. The Kuckers stage of the Ordovician Rocks in NE Estonia. Acta et Commentationes Universitatis Tartuensis II, 1, 1-92.