Brachiopoda

Productorthinae Schuchert et Cooper, 1931

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.
Hints, L. 1990. Ordovician articulate brachiopods.. Field Meeting Estonia 1990. An Excursion Guidebook. Eds: Kaljo, D. & Nestor, H., pp. 58-61.
Rubel, M. P. 1961. Lower-Ordovician brachiopods of the superfamilies Orthacea, Dalmanellacea and Syntrophiacea of Eastern Baltic. Trudy Instituta geologii AN ESSR 6, 141-226. ENSV Teaduste Akadeemia Geoloogia Instituudi Uurimused VI, pp. 141-226.
Oraspõld, A. L. 1959. Some representatives of the Superfamily Orthacea from the Upper Ordovician of Estonia. Tartu Riikliku Ülikooli Toimetised 75, I, 59-79. Töid Eesti NSV geoloogia alalt, I, pp. 59-79.
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.