Borealis Boucot, Johnson et Rubel, 1971

Selection of related publications
Boucot, A. J., Johnson, J. G., Rubel, M. 1971. Descriptions of brachiopod genera of subfamily Virgianinae Boucot et Amsden, 1963. Proceedings of the Academy of Sciences of the Estonian SSR. Chemistry and Geology 20, 3, 271-280.
Rubel, M. P. 1970. Silurian Brachiopods Pentamerida and Spiriferida of Estonia.