Brachiopoda

Ranorthis Öpik, 1939

Selection of related publications
Egerquist, E., Holmer, L. E. 2006. Early-Middle Ordovician (Billingen- Volkhov stages) Orthide and Protorthide brachiopods from the East Baltic. GFF 128, 4, 339-348. DOI:10.1080/11035890601284339
Rubel, M. P. 1961. Lower-Ordovician brachiopods of the superfamilies Orthacea, Dalmanellacea and Syntrophiacea of Eastern Baltic. ENSV TA Geoloogia Instituudi uurimused VI, 141-226. ENSV Teaduste Akadeemia Geoloogia Instituudi Uurimused VI, pp. 141-226.
Öpik, A. 1939. Brachiopoden und Ostrakoden aus dem Expansusschiefer Norwegens. Norsk Geologisk Tidsskrift 19, 117-142.
References based on distribution