Brachiopoda

Leptaena (Septomena) Rõõmusoks, 1989

Selection of related publications
Rõõmusoks, A. 2004. Ordovician strophomenoid brachiopods of northern Estonia.. Fossilia Baltica 3, pp. 1-151.
Rõõmusoks, A. 1989. Über die divergenz der Leptaenidae (Brachiopoda) in der Viru-und Harju-zeit in Baltoscandia. Proceedings of the Academy of Sciences of the Estonian SSR. Geology 38, 3, 112-117.
Oraspõld, A. L. 1956. New brachiopods from the Jõhvi, Keila and Vasalemma stages. Trudy Instituta geologii AN ESSR 1, 41-67.
Öpik, A. 1930. Brachiopoda Protremata der estländischen ordovizischen Kukruse-Stufe. Tartu Ülikooli Geoloogia Instituudi Toimetused 20, 1-261.