Protozygoidea Copper, 1986

Selection of related publications
Rubel, M. 1977. Revision of Silurian Dayiacea (Brach.) from the North-East Baltic. Proceedings of the Academy of Sciences of the Estonian SSR. Chemistry and Geology 26, 3, 211-220.
Rõõmusoks, A. 1964. Some brachiopods from the Ordovician of Estonia. Tartu Riikliku Ülikooli Toimetised 153, II, 3-28. Töid geoloogia alalt, II, pp. 3-28.