Bivalvia

Praenuculidae McAlester, 1969

Selection of related publications
Isakar, M. 1991. Harjuan (Late Ordovician) new Bivalves and a new Gastropod from North Estonia. Acta et Commentationes Universitatis Tartuensis 934, 43-60. Eesti Ordoviitsiumi paleontoloogia ja stratigraafia, pp. 43-60.
Kiselev, G. N., Sinitsyna, I. N., Isakar, M. A., Mironova, M. G., Saladzhius, V. Y. 1990. Atlas mollûskov verhnego ordovika i silura severo-zapada Vostočno-Evropejskoj platformy.