Ostracoda

Ceratopsis Ulrich, 1894

Selection of related publications
Neckaja, A. I. 1953. Tetradellidy ordovika Pribaltiki i ih stratigraficheskoe znachenie. Tudy Vsesoûznogo Naučno-Issledovatel'skogo Geologo-Razvedočnogo Instituta (VNIGRI) , 309-363. Stratigraphy and fauna of the Ordovician and Silurian West Russian Platform, pp. 309-363.
Öpik, A. 1937. Ostracoda from the Ordovician Uhaku and Kukruse formations of Estonia. Tartu Ülikooli Geoloogia Instituudi Toimetused , 50, 1-58.
Öpik, A. 1935. Amphipora ramosa (Phill.) in the Marine Devonian of Estonia. Tartu Ülikooli Geoloogia Instituudi Toimetused , 41, 1-7.