Nekotorye predstaviteli nadsemejstva Orthacea iz verkhnego ordovika Estonii [Some Upper Ordovician representatives of the superfamily Orthacea of Estonia].
Brakhiopody nadsemejstv Orthacea, Dalmanellacea i Syntrophiacea iz nizhnego ordovika Pribaltiki [Lower-Ordovician Brachiopods of the superfamilies Orthacea, Dalmanellacea and Syntrophiacea of Eastern Baltic].
Lower Ordovician brachiopods of the superfamilies
Orthacea, Dalmanellacea and Syntrophiacea of Eastern Baltic.
Nekotorye predstaviteli nadsemejstva
Orthacea iz verkhnego ordovika Estonii [Some representatives of the
Orthacea from the Upper Ordovician of Estonia].
Nekotorye predstaviteli nadsemejstva
Orthacea iz verkhnego ordovika Estonii [Some representatives of the subfamily
Orthacea in the Upper Ordovician of Estonia].
Einige Vertreter der Superfamilie
Orthacea des oberordoviziums Estland.
Some representatives of the superfamily
Orthacea from the upper Ordovician of Estonia.