Brachiopoda

Kullervo Öpik, 1932

Selection of related publications
Hints, L., Hints, O., Nemliher, R. & Nõlvak, J. 2007. Hulterstad brachiopods and associated faunas in the Vormsi Stage (Upper Ordovician, Katian) of the Lelle core, Central Estonia. Estonian Journal of Earth Sciences 56, 3, 131-142.
Vinn, O. & Rubel, M. 2000. The spondylium and related structures in the clitambonitidine brachiopods. Journal of Paleontology 74, 3, 439-443. DOI:10.1017/S002233600003170X
Öpik, A. 1934. Über Klitamboniten. Acta Univ. Tartu A XXVI,
Öpik, A. 1930. Brachiopoda Protremata der estländischen ordovizischen Kukruse-Stufe. Tartu Ülikooli Geoloogia Instituudi Toimetused 20, 1-261.
References based on distribution